Rainbow Dash's Pee Desperation

by Certificate

First published

Rainbow Dash tries her absolute best to fight her bladder to the very end and hold it in as long as she can. She can't get enough of it, and it soon becomes her new favorite hobby.

Rainbow Dash's adventures of trying to keep her bladder full for as long as she possibly can. What starts out as a hobby soon turns into her favorite pastime...

The beginning

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It was currently late evening in Ponyville. The day had gone by, and just about everypony was in their homes, ready to go to sleep and wait for the next day to arrive. Rainbow Dash would normally be doing the same just like everyone else, but today there was a slight distraction on her mind.. although not so slight anymore. It left her bouncing and fidgeting in her room, but also leaving her in a state of arousement and excitement. In short, her bladder was full, with barely any room left to hold in any more pee.

She was about to lose it. She bounced violently in her room, her holding muscles quivering from over-usage. She was about to wet herself. She had been holding in her pee for almost two days now.. Her bladder was over-filled, fighting violently against her holding muscles to try and force the pee out. She didn't dare let up though. She couldn't lose it-- not now not ever!

She bounced up and down violently in her room, walking back and forth in desperation, currently nude for her own personal enjoyment. Despite the tremendous force being forced on her tired holding muscles, she didn't dare let them go. Her bladder reacted differently, however. It was relentless as it tried to force the pee past her quivering holding muscles.. which so desperately wanted to let go under the pressure.. Rainbow moaned, crossing her legs and squeezing, trying as hard as she could to keep her holding muscles clenched. She couldn't keep this up forever though.. her bladder kept getting fuller.. and her holding muscles kept getting weaker.

She quickly sat down on the bed, fidgeting violently as she did. She pressed her hands against her plush vagina, squeezing it. She couldn't lose it now! Not yet! She tried desperately to keep her quivering holding muscles to stay clenched closed, causing her to pant in a mix of exhaustion and effort.

She lied down on her bed and squirmed, pressing her legs tightly against each other in an attempt to help hold it.. She could barely keep doing this! She continued straining her holding muscles to their limit, determined not to let herself lose it. She didn't want to admit she could wet herself. She wanted to be the boss over her bladder and not let it control her.. So why was she wasting time in her room?

She forced herself to sit back up, moaning as she accidentally put pressure on her bladder. She wasn't going to let her bladder do this to her. She got off the bed, trying desperately to keep her exhausted holding muscles clenched. She walked out of her room, still completely naked, her breasts and her plump pussy being shown in all their glory. She felt a specific feeling of free-ness she didn't feel all that often.. and her full bladder only made the feeling more intense.

Her bladder was relentless to empty however-- spasming violently as it was over-filled. She didn't dare let it empty though. She crossed her legs, clenching her exhausted holding muscles harder, just barely managing to hold it. She had been forcing her holding muscles to go too far for too long. She was over-straining them so much.. her tired, exhausted holding muscles were so weak now... they just wanted to let go and relax.. but Rainbow knew she couldn't let that happen. She knew she had tough holding muscles-- she was going to make them hold up to the task of holding in her pee. If they couldn't do that, then they were useless in her eyes.

She uncrossed her legs and started walking again, looking around. She didn't really want her bladder to get in the way of her daily activities, but what could so do? All that was on her mind was her rapidly over-filling bladder, making it hard to think. She could fly, but that would be too strenuous... but then again she had originally planned on not letting her bladder control what she was going to do anyway, no matter how strenuous it seemed. She tried to reassure herself more that she would be fine by taking a couple deep breaths, before briskly walking over to her front door.

Upon making it to the door she opened her it and stepped outside, closing her door behind her. She felt the cool evening air blow across her bare body, causing her to shiver a tiny bit from the unexpected breeze, although it was nothing she couldn't handle. She also felt slightly nervous, but not because she might wet herself, but because she was naked. It was dark out, but she still felt like anyone could be watching. After several seconds of quick thinking though, she thought up of the daring but exciting plan of flying over the Everfree Forest. She figured no one would ever see her there.

She went to open up her wings, but found they were already open, most likely due to a wing-boner from the arousement of holding in her pee for so long. Speaking of pee.. She suddenly began to feel her bladder spasm, and she knew what type of spasm this was. Average ponies would practically always wet themselves after this. She felt the pee start to go through her urethra, her holding muscles feeling like they were powerless to stop it. If she tried to clench, it would seem like nothing happened.

Most ponies would panic at this point and end up wetting themselves, but she knew how to prevent that from happening. She didn't panic, because she knew her holding muscles can hold it. She felt the pee keep pushing through her urethra with seemingly unstoppable force, but she was not ready to let it come out. She instantly crossed her legs so tightly it hurt, and made a fist, before jamming that fist in her vagina. She then clenched so hard she moaned from pain, straining her holding muscles even more. She then felt the pee; it was right there, and feeling like it was about to come out.

Her eyes widened in pain as the pee tried to force it's way past her holding muscles, which were seemingly screaming out in pain now. She couldn't lose it yet though-- especially not outside! She kept clenching her aching holding muscles as if her life depended on it, not daring to let up. After a few more pain-filled seconds, the urge finally started to surpass, but she couldn't let go just let. She knew if she did a squirt of pee would come out.

She kept clenching for a few more seconds, before her holding muscles starting quivering, but thankfully enough time had already passed. She almost instantly relaxed, her holding muscles nearly completely relaxed now. There wasn't any urge at the moment and the pee didn't feel like it would come out, but she still was careful. If she relaxed them too much the pee would come out anyway. Urge or not-- she was that bursting full.

She had also used her holding muscles to the limit, though, and they were dead-tired. Just clenching them hard once almost seemed equivalent to doing 500 wing-ups. Based off some experience, she knew she'd be alight for awhile now. At least she hoped. With how tired her holding muscles were, she didn't know what would happen.

She quickly tried to think about something else, however, like flying. She started flapping her wings, being very very careful not to put pressure on her bladder. Normally she wouldn't have cared, but she felt that just the smallest pressure on it would cause her to lose it in a massive burst of pee. She started to lift off the ground, before flying over to the Everfree Forest.

On the way there she was met with a couple small urges, most likely due to the activity, but she was able to hold them. She kept flying for a few more minutes, enjoying the nice cool breeze across her plump vag and breasts (Which she didn't feel that often.) Until to her ultimate dismay, she felt another one of those urges.

This time it was harder not to panic. She was in mid-air, and this urge felt powerful. She wanted to land, but there was no-where she could go to land fast enough. Granted she could easily fly to the ground in just a couple seconds, but the effort she would have to put for that speed would ultimately press too hard on her over-filled and over-stretched bladder, and she knew she would lose it then. This meant she had to do it in midair, while flapping her wings. In all honestly, Rainbow didn't think she would be able to do it. But she wasn't going to give up without a fight.

When she thought the time was right, she crossed her legs as tightly as she could, jamming her fist in her vag. She then clenched as hard as she possibly could-- it might've even been the hardest she clenched ever. At least that's what it seemed like. But would it be enough?

It actually took a few seconds for her holding muscles to fully clench. They were sluggish and tired-- they had been pushed nearly to their limit too many times. Maybe, one too many times.. Rainbow can only push them so far... those poor holding muscles...

Eventually the pee reached her holding muscles, and she gasped. She even squealed as she squeezed her eyes closed and clenched her teeth, trying to clench her holding muscles even harder. Too hard.. The pee was literally a split-second from coming out now. She felt it right there-- her holding muscles just barely keeping it back. Any sane pony would've let them let go and let the pee burst out, and it would burst out. It would burst out so hard it'd probably be like a jet, but she wasn't like that. She was going to try as hard as she could, because there was no way she was going down without a fight.

Her holding muscles started to get even more exhausted, but so did her urge. She realized-- she could do this! She panted heavily, sweat completely covering her. She just had to keep clenching.. if the urge kept going away like this, she knew she could do it. Every fiber of her being was pushed to the limit as she kept clenching her poor, abused holding muscles. She felt her bladder kept trying to push out the pee, but she knew she was winning. Until she realized.. she was falling.

She had pushed herself so hard she forgot to keep flapping her wings. She was falling straight for the forest. She instantly went to flap her wings, but that additional movement-- that one additional movement.. was her worst mistake.

She had lost it.

Pee ripped right past her holding muscles, which offered close to no resistance and literally burst out her plump pussy, shooting out like a jet, probably going at least over three yards. She yelped in shock and stopped flapping-- she didn't care if she fell. Holding it was the most important thing in her life at this moment. She tried to clench again, but she quickly dismissed that as useless, as her holding muscles were seemingly in-responsive. There was only one thing left she could do. Something only she could do..

She clenched the outer-folds of her marehood closed, something she had learned to be a rare talent as no other mare seemed to be able to do it.The pee stopped shooting out, briefly pooling in the small area behind her folds. The small space was quickly filled though.. and her bladder noticed this.

She moaned at the strange feeling she was experiencing, which was quite pleasurable, but she had to focus. She quickly started flapping her wings again, barely managing to miss hitting a group of tree branches. She had to lower to the ground otherwise she knew she would lose it. This was her emergency ration, she couldn't keep those sweet folds clenched for too long. She had to get down, and use her holding muscles-- she knew she'd be able to use them much easier once on the ground.

She found it hard to focus on getting down, her over-filling bladder and the effort she was putting out to keep it full made it hard to think about anything else, but it was enough to be maneuverable. Meanwhile, her bladder kept spasming. It squeezed into a cone shape, trying to force the pee out, even harder than before. Her plump, precious folds were straining to keep clenching. They weren't used to this. Rainbow moaned in pain and pleasure as she kept sloppily gliding down, the ground slowly starting to get closer.

It was beginning to become too much though. It was swollen down at her marehood.. the pee kept trying to force it's way out, making it seem even plumper than before. Despite how sexy it must've looked, she couldn't look. Her sweet, folds were almost trembling now.. it was beginning to become too much for them..

She didn't let up however, and kept her holding muscles tightly clenched. She was almost at the ground.. she was so close... she had to keep them clenched-- she was almost too close now. Her bladder spasmed again, trying to force the pee out even harder. Her precious folds were about to break apart... they trembled more, a tiny trickle of pee starting to come out. It was as if the dam was at it's breaking point..

She moaned as she forced her folds to clench harder, managing to stop the trickle. They felt like they were about to just burst apart, the pee trying to force it's way through with almost unbearable force. She squealed as she teared up in both pain and effort, her precious folds bulging out even further. The pee was so close to bursting out... her bladder only kept spasming, making it unbearably worse. She was only on the last shreds of her will-power now, starting to over-strain her plump folds.

A glimmer of hope shined through as she noticed the ground come into view, however. She could do this! She could go further than any mare as ever gone! With new-found determination, she clenched even harder, her sweet folds pressing so tightly against each other.. She knew she could do this.

Every passing second was like pure torture. Her folds so desperately wanted to let go, but she didn't let them let go with all the willpower she had. She was going to make herself do this.. no matter what. The ground kept getting closer and closer... until, to her ultimate horror, her bladder began to spasm again. A violent one.

With the pee already mere milli-seconds from coming out, it didn't take long at all before she felt the effects. She squealed as she felt the pee push against her folds with nearly un-stoppable force, puffing them out even more-- too much... A small trickle of pee started to come out again, Rainbow seemingly powerless to stop it. Her folds were too exhausted... they had been pushed over the limit.

More pee started to trickle out, drips of it going in any direction. It literally looked like a dam was about to break, and it seemed as if she was helpless to stop it. She was pushing her folds so hard they were visibly quivering now, more tears forming in her eyes from the incredible amount of effort she was putting out. Her attention was suddenly brought to reality as she felt her feet sloppily land on the ground. She had finally made it!

A spark of excitement and determination shot through her as she landed, her feet shakily touching down on the ground. Pee kept trickling out through her folds however. If she tried to clench harder, it was as if her sweet folds were unresponsive. They were truly at their limit now, but that didn't matter. She was finally on the ground-- she had lasted long enough!

She took a huge, deep breath, preparing herself for what she was about to do. Before she started, however, she couldn't help but to look at her pussy-- the very thing that had kept her from wetting herself so far. Her eyes widened in shock, and as if in an instant, she suddenly became incredibly aroused. Almost as horny as she had ever been in her whole life. The sight of how plump and swollen it was, the pee trickling out like a loose water spout... the sight seemed to be painted in her mind, as if she would never forget it. She unfortunately couldn't spend any more time looking though-- she felt as if she was going to burst any second.

After taking a few shaky deep breaths, she quickly crossed her legs as tightly as she could, and clenched her holding muscles as hard as possible. Thankfully her holding muscles seemed to of regained some of their energy while they were relaxing, which proved to make it slightly easier to cut off the flow. In the process, however, as her holding muscles clenched, it not only pushed the pee back in her bladder, but also tried to push it out. It instantly became too much for her precious folds, and they burst apart.

The pee that was pooled behind them shot out like a rocket, literally kicking up a small bit of dirt that was on the ground. This was short-lived, though, as the pee inside quickly ran out, only drops dripping off her exhausted folds, the rest being held back in her bladder by her holding muscles.

Her bladder spasmed again in protest, but due to her semi-restored holding muscles, it wasn't too difficult to hold the pee back. After a few seconds her bladder stopped spasming as fiercely, and her violent urge seeming to almost magically fade away, and hopefully not coming back for a reasonably long time. It was only then she realized just how exhausted she was, and she let herself collapse on the ground, panting and being completely covered in sweat.

"Oh... my... Celestia..." She muttered to herself, before starting to smile a tiny bit. She had done it. She had done what no mare had ever done before. She used her sweet pussy folds to hold in her pee, after she had lost it. She couldn't believe how happy she was with herself. From there, she vowed to never let herself pee again. Now of course, as much as she didn't want to admit it, she would eventually. But she quickly dismissed that thought, smiling to herself. She wanted to believe she could hold it forever for now.

Her attention was eventually brought to her lush pussy, and her eyes widened a little in arousement as she looked. Her folds were dead tired and relaxed, laying limply to the sides, exposing the inside of her beautiful pussy. She only stared for a couple seconds, before she came to a rather obvious decision.

She had to masturbate.

A memorable night

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The orgasm she experienced from her previous fapping had to of been one of the most intense ones she had felt in a long time. Although it hadn't even been a minute before she climaxed, the incredible aroused state she had already been in had multiplied the pleasure. She lied her head back against a near-by tree, panting and sweating from her previous fun time. She was exhausted, tired, and she wanted to sleep. She felt and saw how full her bladder was, which was bulging a couple inches outwards, but thankfully it wasn't bothering her too much.. yet. She closed her eyes, quickly letting herself drift off into blissful sleep.


She eventually woke up sometime during the night to find her bladder was spasming quite violently. In reflex she pressed her legs together, bringing her hand over to her pussy and squeezing it slightly, managing to hold back the urge that had woke her up. By now her bladder was in a constant dull ache-- a somewhat painful yet pleasurably arousing feeling coming from it. As she looked at her bladder, she found it was bulging out even further than when she had last fallen asleep. Its shear size and volume was something that, in her mind, she just had to hold in. She couldn't help but place her hand on her swollen bladder, gently rubbing it slightly, feeling its
unbelievably full and firm texture.

"Man I don't think it's ever been this full.." She smiled, but her bladder was quick to start protesting. It spasmed, trying to force out the pee that's been trapped inside of it for so long. Her urge to pee had gotten much, much worse while she was asleep. Rainbow only clenched her urinary sphincter in response, moaning lightly as she felt herself continue to keep back the massive flood. She didn't want to sit here for the rest of the night however--her bladder's spasms were only going to get worse and worse as time went by.

Her attention was then brought to her surroundings. She had fallen asleep in the middle of the Everfree Forest! That probably wasn't the best idea ever, but now that she wasn't awake, she couldn't really care less. She would just have to try and avoid doing it again, which was something she wouldn't have to worry about at the moment. Her over-filled bladder would most likely make it impossible to fall asleep again.

She stood up a few seconds later, moaning a bit as she felt her bladder spasm more from the movement. She held her breath and pressed her legs together, fidgeting and bouncing a bit as she struggled to keep her sphincter clenched closed. It was already a miracle she hadn't lost it before she fell asleep, but now her bladder was even fuller than before. She exhaled slowly and shakily as she looked down at her bulging bladder, staring at it in arousal for a few seconds before perking her head back up, looking around. She was obviously lost, but she knew if she ever wanted to get out she could just fly away using her powerful wings. For now, though, she decided to look around. The thought of exploring the forest, with absolutely no clothes on and an over-filled bladder kept her in a constant state of arousal.

Without spending anymore time looking around, she started to walk off in the direction in-front of her. Her gait was brisk and tense, her legs closer together than usual as she made her way through the forest. Her bladder was constantly reminding her how full it was, her urinary sphincter struggling to hold back the massive flood inside of her.

She kept walking, stopping to fidget and cross her legs every so often from her urge, before eventually coming across a small lake. She smiled as she walked up to it, pressing her legs together and squirming a bit as she looked down at it. It was surprisingly clean, some of the light from the moon reflecting off of it through the trees of the forest. Figuring it would be nice to do something else other than just walk, she decided to swim around for a bit.

She placed her foot in the water to test the temperature, her whole body tensing up a little more as she tried to stay still on one leg. The water had a bit of a cold sting to it, but she doubted it was anything that was too cold for her. She was already used to freezing cold weather from her job at the weather factory anyway. She got in position, before jumping towards the middle of the lake, bringing her legs close to her body and wrapping her arms around them. Upon making contact she made a huge splash, her body being submerged in the water.

Big mistake.

The instant her body was submerged in water, her entire, exposed body was overwhelmed with cold-- colder than she had thought it would be. She jolted from the initial shock and pressed her legs hard together in the water, her bladder spasming violently in response to the cold. Getting desperate for air, she quickly resurfaced, taking a large breath of air as she held her arms close to herself.

"Dang that was colder than I thought it would be! Stupid water." She said to no one in particular. She squirmed in place as her bladder continuing being defiant, her urge getting much worse than before due to the cold. She tried to play it off like it was nothing though, ignoring it as best as possible. "That's not gonna stop me from taking a swim though." Taking a deep breath she submerged herself under the water, lightly swimming downwards.

She felt the cold lake water brush smoothly against her completely bare skin as she swam, the light from the moon illuminating the inside of the lake. Her legs were still close together as she kicked them, close enough for them to be rubbing against each other as she swam across the bottom of the lake. She could especially feel the cold water where her bulging bladder was, which was continuing to relentlessly spasm. She kicked her legs faster in an attempt to help herself hold it in, her already exhausted urinary sphincter being strained to keep clenching harder and harder. Figuring she had been under long enough, she began to swim upwards, breaching the surface of the water only a couple seconds later.

Taking a gasp of air, she fidgeted and squirmed, moaning lightly from her fierce urge. Despite being so cold, she couldn't help but feel increasingly turned on by her current situation. Feeling the cold water make contact with her bare pussy didn't help with that, either. As she floated in the water she couldn't help but look down, her badder clearly bulging from beneath the water. She shook back and forth in the water as she stared, her heart beating faster in her chest as her mind kept being flooded with lust. She could also see how erect and hard her nipples were from the cold, only making her feel increasingly horny.

With her bladder's constant spasms taking her out of the mood for swimming, she made her way over to the edge of the lake, briskly climbing out. Upon standing up the ground, she could feel the cold night air blow against her wet body, making her shiver. She rapidly tapped her feet on the ground and squirmed from her ever-growing desperation, looking around. She had completely dismissed getting something to dry herself off with.

"Gosh I'm stupid." She frowned slightly. She figured she might as well fly back home and get a towel to dry herself off with. Opening up her wings, she started to move them back and forth, trying to shake the water off of them. She crossed her legs and moaned a bit as she did so, walking in place from her urge again before starting to take off, flying upwards and eventually past the trees.

Upon making it past the tree-line she pressed her legs together, moaning before suddenly gasping. Her urge to pee was really getting much worse now.. She breathed shakily and squeezed her eyes closed, groaning as she clenched her abused sphincter as hard as she could.

"C'mon I just gotta get back to the house-- it'll get easier once I'm there." Flapping her wings harder, she flew off in the direction of her house, hoping it wouldn't take too much longer.

The entire trip there she was squirming and fidgeting, her over-filling bladder getting closer and closer to forcing its contents out. By the time her house began to come into view, she felt like she was about to lose it.

"Finally!" She quickly flew over to her front-door, letting her feet shakily touch the ground. Nearly instantly after landing she crossed her legs as hard as she could, moaning as she hunched her body over. Her urge was getting too bad now, and she started to wonder if she could even last the next few minutes.

Fidgeting excessively, she hastily opened the front-door to her house, making her way inside before closing the door behind her. She started to fiercely walk back and forth, breathing intensely as she felt only minutes away from possibly losing it.

After walking back and forth for a little longer, she made her way over to her closet, taking a towel and wrapping it around herself. Flying back to her house had dried most of her off already, but she figured she might as well dry the rest of herself off. She continued to walk rapidly and make short steps as she made her way into her bedroom. Sitting down briskly, her bare bottom made contact with the bed, and she moaned as she felt her bladder spasm violently. She pressed her legs together, her feet swiftly patting the ground in desperation as she strenuously kept holding it in. Her urge showed no signs of going away this time..

She quickly started drying herself off with the towel, her movements fast and sloppy from her desperation. It was nearly impossible to keep her legs still, and within only a few seconds she had to bolt upwards and stand up, crossing her legs as hard as she could. Her eyes widened and she groaned loudly as she tried to hold it, trying to cross her legs even more before suddenly walking in place again. She hastily decided that she was dry enough, and threw the towel on her bed, before pressing her legs hard against each other. She couldn't stop fidgeting no matter what she did, and she knew that was a sign that she was approaching her limit.. She may have been able to luck out once, but she couldn't help but doubt she could do it again..

Although hesitant, she eventually and slowly walked out of her room, her legs pressed against each other the whole way. Her eyes came across the front-door, and she thought over whether or not to go back outside. She knew it would be completely crazy-- insane even, considering how bad her urge was right now, but she did tell herself not to ever let her bladder boss her around.. Just the thought of going outside with this bad of an urge turned her on. Even though she knew it probably wasn't going to end very well, she decided to go back outside.

As she walked to the front door, she felt another huge urge strike her bladder. She gasped and bent down, crossing her legs tightly, forcing her holding muscles to clench harder, barely managing to keep it in. They were getting weak fast... she thought twice about going back outside, but she wanted to be the boss over her bladder, and not let it control her.

She opened the door and quickly walked outside, breathing shakily. She literally felt like she was about to lose it right then. Her holding muscles kept quivering, exhausted from all the clenching, and her bladder kept spasming against them non-stop. She could almost already feel her pee push through them, ever so slowly getting further and further down her urethra. She tried to ignore it as much to her ability, though, and began flapping her wings, which were already wide open from a wing-boner. In a couple seconds she started to lift off the ground, before speedily flying off in the direction of the Everfree Forest.

As she was flying, she kept feeling spasm after spasm from her bladder, almost making her lose it a few times since her pee got so close to exiting. This was already getting really bad. She moaned as she pushed her legs together, trying to help herself hold it. She felt her heart beat rise as she began to realize she might not even make it the next couple minutes. She flew faster, wanting to get to the forest as fast as she can.

Within about a minute she arrived, and she flew over it for a couple seconds before landing inside, very close to the entrance, still breathing shakily from the effort. As soon as she landed she crossed her legs as tightly as she could, trying to clench her unwilling holding muscles harder. She managed to keep them closed until the momentary urge went away, and she tried to catch her breath afterwards. She knew the end would be coming in only a matter of minutes. If she forced herself hard enough, maybe another half an hour. After all she kept thinking she would lose it in the next few minutes for awhile now. But she doubted she would last until the morning..

It was then she realized if she actually did hold it until the morning came, she would've made it for three, whole entire days. Her bladder would've been bursting full with over three days worth of pee... that would've been beyond amazing. She sighed knowing that would most likely be impossible, but she was still going to try.

Her bladder spasmed again, each spasm getting more violent as her bladder got fuller and fuller. She bounced and shook her legs as she struggled to hold it in, her holding muscles straining against the pressure. She managed to hold it and sat down on the ground, hoping it would help.

Her legs shook violently as her bladder kept spasming, bringing her legs closely together to try and help. Every second it felt like she was closer to just wetting herself, her holding muscles getting even more exhausted. She couldn't keep clenching them like this.. they had already been pushed to their limit too many times before.. Constantly they had been used, for over two days now.. they couldn't keep doing this.. Everything has it's limits..

Rainbow refused to believe that though. She didn't care if she forced them to clench for months-- she knew they were tough and they could handle it. With the way things were heading, though, she was slowly beginning to doubt she could last much longer. She would've already lost it hours ago if it weren't for her plump marehood. But her bladder wasn't as full then-- this time.. this time it was too full. It had already been stretched further than it could hold.. it couldn't keep stretching like this. It needed to empty now.. Two days was already long enough for it. Her defiant bladder didn't want to stay full for three days.

She moaned again as she quickly stood back up, sitting down not seeming to help that much. Her legs shook and squirmed violently, her holding muscles continuing to quiver. She was nearly clenching them as hard as she could now, constantly. She would've desperately wanted her holding muscles to suddenly somehow be refreshed, but she knew that wouldn't happen.. it was unfortunately only a matter of time now.

She continued bouncing and fidgeting violently for several minutes, using every bit of her willpower and strength to keep her holding muscles clenched tightly closed. She wasn't even focusing on where she was going-- just about all her attention being focused on holding it in. Her gait was slow, and she had her legs pressed hard together the entire time she walked, which was only in small but rapid steps. She wanted to relax but she couldn't-- her bladder was too full and being too relentless for that. Her absolute limit was being reached... for two, whole days now. Two whole days she held strong, and defied all odds. But.. this time might finally lose it. In the middle of the Everfree Forest, no less, still with absolutely nothing covering her.

She knew if she ever lost it she could always clench her plump folds to hold it, but that was more like her emergency ration. She wasn't that used to using them, and they weren't used to holding back so much pressure. Most if not all other mares couldn't even do it in the first place-- once their holding muscles gave up that was it. Which struck Rainbow as a little pathetic, but.. she couldn't complain. If it wasn't for her being able to press her outer-lips together she would've never been able to last this long.

Her bladder's constant spasms were becoming too much, though. She shook her legs violently as she felt a harsh urge hit her. She moaned as she crossed her legs tightly, squeezing her eyes closed as she tried to clench her over-used holding muscles further. The pee stayed right there, pressing against her sphincter for a few seconds, before slowly starting to go away, her exhausted holding muscles starting to quiver more. After a couple seconds she let them relax a little, now panting and sweating from the effort. There was unfortunately nothing she could do to make this any easier..

She looked down at her bladder, her eyes fixated on it's huge bulge. She so badly wanted to keep it full like this.. She wanted it to last forever so, so badly. It was bulging so far out, so full of days worth of pee. She didn't want it to ever empty-- she wanted to feel the sensation of holding it in forever.

Of course forever was probably too much, but at least for right now, she didn't want it to empty no matter what. It was always better to have a full bladder to her. Especially this amazingly full... this was easily the most she had ever held, and most likely much more than her friends can hold. She almost wanted to show it.. or at least keep record of it somehow.

Keep record of it. This thought hit her like a rock. If she lost it, she wouldn't be able to see her bladder was this full again! At least not for a very long time.. she had to take a picture of it. Something to show that she had actually held in this much. Her camera was all the way back at her house though. That would mean she would have to fly all the way back..

She gulped slightly at the thought of that. The last thing she wanted to do was fly again-- she could already feel her pee get closer and closer to exiting every time her bladder spasmed.. At her current stage of desperation right now she felt like she would lose it once she lifted off the ground. She had told herself not to let her bladder control her, though.. She inhaled, feeling nervous; she could just picture herself losing it in mid-air, her pee splattering everywhere onto the ground like a sprinkler.. Her body tensed up just at the thought of it, and she shook her head a bit, trying to get that thought out of her head. She knew she was capable of doing this successfully.

As if to cripple her confidence, however, she felt another urge as her bladder spasmed. It was one of 'those' urges. She tried not to panic, and waited, feeling the pee slowly go through her urethra, her exhausted and abused holding muscles simply lying limply and letting the pee flow through. Before her pee came out, though, she took a deep breath, crossing her legs as quickly and as tightly as she could. She squealed and moaned as she clenched her sphincter as hard as she possibly could, her body jolting slightly from the painful effort. She could even feel her bladder squeezing itself, trying to form a cone shape in an attempt to force its contents through. Rainbow didn't give up though, holding her breath as she tried to keep her over-used sphincter clenched closed.

She kept clenching, her body as still as a statue. She felt her pee continuously pushing against her holding muscles, which were just barely keeping it back. They were so exhausted by this point.. She couldn't keep abusing them forever like this-- she liked to believe they could hold in anything, but even she had her limits, even if she didn't actually believe in them. She puffed out her cheeks as she kept holding her breath, still not daring to move from her position.

After a couple seconds her holding muscles started to quiver from over-usage. Fortunately, at about the same time her urge thankfully started to go away, but she still couldn't let go. She knew if she relaxed too soon a small bit of pee would come out, and she wanted to keep every single drop inside. She moaned, her holding muscles quivering more intently as she tried to force them to stay closed for just a little longer.. She slowly started breathing again as she felt her lungs get desperate for air, until she finally felt her pee get pushed all the way back into her bladder. She almost instantly but slowly relaxed her holding muscles, feeling them relax in throbs as she started panting lightly, even sweating from the intense effort. She had managed to keep all her pee trapped inside her bladder without losing it..

That was just one urge though. It was only going to get worse from there, and she still had to get to her house. She took a couple shaky breaths, trying to focus. She could do this... she could do this.. She still hadn't used her plump folds yet. Not wanting to waste anymore time, since she felt as if another urge could easily overwhelm her, and she began flapping her wings, flying upwards and out of the forest.

Barely seconds after she lifted off the ground, she started feeling several small but violent urges. Her bladder wanted to empty right this instant. Despite so badly wanting to relax, she clenched her holding muscles again, this time in contractions. She couldn't even keep them completely clenched by this point, and she knew she had to hurry. She flew faster, feeling the wind brush across her bare and exposed body. As nice as it felt, and as horny as it made her though, she couldn't focus on that due to her quickly overwhelming urge.

She couldn't keep doing this, though. About halfway through her holding muscles started to relax against her will, and she struggled to keep clenching them to hold back her bladder's urges. They quivered every time an urge came, and she had to force them to clench harder just to keep squirts from happening. Eventually, to her horror, however, she felt another incredibly bad urge start coming.

Her flying almost unconsciously slowed down until she was just hovering in place.Her holding muscles practically completely relaxed now. It was like she couldn't use them. She exhaled shakily as she felt the pee start to go through her urethra.. Gosh it would feel so good to just let go... and let it all out... to relax so blissfully.. She already started to feel her whole body relax as the pee went further down her urethra.. it felt so mind-numbingly good.. To finally empty her over-filled, swollen bladder... filled with so much pee... too much pee...

She gasped as she tried to get rid of those thoughts, her legs kicking slightly in the air before she crossed them as hard as she could. She managed to clench her holding muscles, but the immense amount of pressure she felt from her bladder was almost immediately too much. Her eyes widened and her cheeks puffed out, moaning loudly through her closed mouth. The amount of pain, pleasure and pressure was unbelievable. She moaned louder and started to tip upside-down, doing everything possible to cross her legs harder and keep her barely-responsive sphincter clenched. She felt herself start to fall downwards, but she couldn't stop it yet-- she was too focused on holding it to even think about flying.

She felt her bladder try to squeeze even more than before, her eyes becoming even wider as she tried to keep it in. She so desperately wanted to just let go and use her folds to hold it in, but she wasn't sure if she could make it back to the house and take the picture in time if she did that. She knew she could do this-- just this one more time. She squeezed her eyes closed, trying and trying harder to keep her over-abused sphincter clenched.. She didn't even know how far she was from the ground-- she knew she just had to hold it. It wasn't even about clenching harder anymore-- she just had to keep her sphincter clenched enough to hold it in.

In a desperate attempt to help she squeezed her crotch as hard as she could with her hands, squirming in mid-air as she tried to cross her legs harder. She suddenly opened her eyes and gasped at the overwhelming pleasure sensation of squeezing her marehood, and she managed to make herself upright again, opening up her wings and violently catching the drift of the air, halting her fall.

She kept squirming and squeezing as she finally started to feel her intense urge go away, the pee that was so badly trying to force its way through her urethra being pushed back into her bladder. She kept squirming for a couple seconds, before exhaling loudly, panting as she tried to catch her breath. She had actually held that.. with what little control she still had of her sphincter. She couldn't think about it though-- she had to get back to her house as soon as she could. Flapping her wings, she started to fly to her house as fast as she could. She didn't care about going too fast and putting too much pressure on her bladder-- she just wanted to get there as soon as possible.

Within about a minute she finally started to arrive at her house, and just in time. Her bladder had started to spasm again, and she could already feel the pee making its way through her urethra as she approached her house. Due to her hastiness, though, she stopped flapping a little too soon, falling through the air a couple feet before landing in-front of her front-door. The impact of landing on her feet sent shock-waves through her, and she instantly started walking very fast in place-- as fast as she could as she ran over to the door.

She started to hyperventilate, opening the door and rushing inside, closing it as hastily as she can. The pressure had become too much by this point though-- despite clenching her sphincter as hard as she possibly could, she felt her pee force its way through her urethra.

"No no no no!!" She tried to clench harder, walking so fast in place her legs started to blur. She knew it was a losing battle this time though, and she felt the 'rush to the bathroom as fast as you can' reflex start taking hold in her mind. Despite that she squeezed her eyes closed, holding her breath as she tried to clench her immensely abused sphincter harder. It was hopeless this time though-- unlike the past few times, her pee kept pushing through, getting closer and closer to exiting-- too close. There was nothing she could possibly do this time to keep it in with her sphincter-- she had only about less than a second before her pee burst through and out her urethra.. Any other mare would've wet herself now, except for her.. Rainbow didn't give up easily.

Un-crossing her legs, she began to clench her puffy outer-lips, pressing them tightly against each other.. Close to immediately afterward her pee went right through her urethra, shooting out with incredibly intense force, only to be blocked from total freedom by her plump folds.. Her bladder realized this shortly afterwards, and spasmed again, trying to force its pee out. It was so close now..

The pee quickly pooled in the area behind her folds, filling it up rather quickly. Her folds began to bulge out from the pressure, but she didn't dare let them up. She kept them tightly pressed closed, keeping the pee from bursting out.. She couldn't help but stare at her pussy as she did so, almost mesmerized by it as she watched her smooth folds bulge outwards from the pressure. Her mind was over-flowing with lust and arousal by this point, and she completely forgot what she was planning on doing for several seconds as she stared.

"Right, the camera!" She wanted to stare longer, but looked back up, speedily starting to run towards her room. It felt weird to run with her folds pressed tightly together, with so, so much pee being kept behind it.. A pleasurable type of weird, though. Her bladder didn't stop spasming either, and she could already feel her folds getting tired from the immense pressure-- she had to move faster. She didn't care about how she moved or how fast it was-- she ran, completely care-free of how much it might put pressure on her bladder.. The feeling of exhilaration she got from it was undescribeable.

Upon making it to her room, she went up to her drawer, starting to look through it from top to bottom. She was surprisingly calm as she did this, the feeling of her over-abused holding muscles feeling incredibly good. Knowing her swollen bladder was still full made her feel even better about it. Upon searching through her entire drawer, though, she frowned, having not found the camera.

She quickly went over to the desk by her bed, getting increasingly desperate by the second. Her body started to tense up as her folds started to get even more tired, and she walked in place slightly as she looked through the drawer. To her dismay, though, she didn't find it there either.

"Where is it??" She started to panic slightly, her movements becoming more ridged and excessive. Her breathing started to increase as she looked around, still not finding it anywhere. She continued searching for nearly thirty seconds, before getting ready to give up and run for the bathroom. By now she was fidgeting and bouncing excessively, her plump folds bulging out a little further from the pressure, when she spotted the camera sticking outwards slightly from under her bed.

"Finally!" Wasting no time she bent over to grab the camera, that choice quickly proving to be a bad mistake as she put harsh pressure on her bladder in doing so. She gasped and her legs shook, quickly standing back up with the camera in her hands, before looking down. Her eyes widened as she saw how much further her plump outer-lips were bulging, not to mention her bladder. Her folds almost looked like they were about to be forced apart, her bladder spasming even harder in an attempt to win. She could barley keep her folds pressed together by this point due to the pressure... her bladder wanted to empty, now. With nearly three entire days of pee being trapped inside, it didn't want to wait any longer.. and the pressure from her bladder was starting to become too much for her.

Her bladder didn't stop spasming. She felt it squeezing, forcing its pee even harder against her smooth and puffy folds. She groaned, feeling her folds very slowly start to be forced apart by the pressure.. it was as if she couldn't press them together any harder. She had to hurry. Unlike with her sphincter, she couldn't push the pee back into her bladder with her folds. It simply stayed there, pushing harder and harder at a constant and ever-growing pressure..

She quickly turned on the camera and pointed it downwards, her entire body shaking from the anticipation and desperation. She groaned louder as she tried to stay still, managing to focus the camera. Only about a second now... *Snap* Her eyes widened. It was finally done. She actually managed to..

The lens cap was still on.

She silently cursed to herself, ripping the cap off and hastily throwing it on her bed. Her bladder spasmed again though. This time, it was much worse than all the other ones.. She squealed again as she felt it push against her folds, which were straining too much now. She could visibly see her outer-lips start to quiver now.. trying everything she could to keep them pressed together. She couldn't keep doing this.. her folds began to swell even more, barely managing to keep it back.. but it was becoming too much. Her plump outer-lips were finally reaching their limit...

A small amount of pee began to trickle out through her smooth folds, her bladder being ever so relentless to force it out.. Her eyes widened and she gasped lightly as she noticed it-- she was beginning to lose it. She squeaked, trying as hard as she possibly could to clench her outer-lips harder and stay still. Focus..

*Snap*

She did it, but there wasn't enough time to feel excited. She was about to wet herself in her own room! She always had a thing against wetting herself.. to her it was the worst thing imaginable-- especially if she's already inside her own house. She either peed willingly, or didn't pee at all, ever. She had to make it to the bathroom, and she was going to have to run as fast as she could. The least she could hope for is that she didn't make too big of a mess..

She threw the camera on the bed, and quickly ran out of the room, holding her breath as she did so. She moaned and squealed as she tried to clench her folds harder, managing to momentarily stop the trickle, but she knew that wouldn't last long. Her bladder kept trying to squeeze harder, the amount of pressure she was feeling almost equaling that of an orgasm. She was so aroused and her pussy was so hyper-sensitive and swollen at that moment that she felt like she could have a mind-blowing orgasm if anything managed to just press against her pussy anyway.

It didn't take long before she made it to the bathroom, feeling the cool air blow against her naked body due to how fast she was running. She didn't even bother closing the door as she ran inside, her pee starting to trickle through her tightly pressed folds again.. she had never been this desperate in her entire life. She wasted absolutely no time opening the lid, almost immediately sitting down afterwards. The first thought that came to her mind was to let go-- just let everything go and relax. For a brief moment, though, she remembered about how she had wanted to always keep her bladder full, the thought of it always turning her on. She didn't relax just yet, holding her breath and puffing out her cheeks as she looked down.

What she saw managed to turn her on so much, she didn't even know it was possible to be that horny. Seeing the pee trickle out of her folds, and the massive size of her bladder almost made her heart skip a beat in arousal. She had already begun losing it, though, despite still trying to press her puffy outer-lips as hard as she could together. She watched as her quivering folds began to spread apart faster, the small trickle pee slowly starting to become bigger.. There was absolutely no stopping it now. Her pee was going to come out no matter what this time..

She tried in vain to hold it-- trying to clench her holding muscles and her folds at the same time-- anything to try and stop it, but it was hopeless. She couldn't even slow down the stream now; there was just too much pressure and she was too exhausted.

A couple seconds went by.... then this was it. Her swollen, bursting full bladder spasmed, her folds instantaneously spreading apart as she relaxed them. Her pee had finally burst through to freedom, loudly splattering into the toilet. Her bladder had finally won, after so many days and so much effort to keep it in..

In her over-flowing arousal, she grabbed her pussy, feeling her pent up pee get all over her hand, before squeezing it. Pleasure she had never felt before in her life soared through her, as her hand and folds squeezed against her clit, her pee splattering everywhere now, getting all over her. Placing her other hand on her bulging and over-filled bladder, she began to press it, screaming loudly in astronomical pleasure and pain, rubbing her pussy as hard as she could with her hand. Her mind became completely numb with pleasure as her pee flew in every direction like a sprinkler.

She kept screaming, feeling her pee get all over her, before her orgasm hit her. She screamed even harder, rubbing her clit so violently it hurt, feeling as if her pussy was erupting from the pressure.. She fell back on the toilet as she rubbed, pee and cum shooting past her exhausted folds, everything in her body relaxing as her orgasm seemed to take her away from reality.

She didn't dare stop rubbing, spreading her legs as her entire body fell limp in pleasure. Pee and cum continued to spray out of her swollen and throbbing pussy as she rubbed, her entire naked body starting to get lightly covered in it. This moment of ecstasy lasted for almost two minutes, before she relaxed, completely covered in sweat and panting hard as her orgasm stopped, pee still weakly flowing past her folds. She panted as she let everything in her body continue to relax, never feeling so mind-blowingly good in her entire life. After about half a minute her stream of pee finally started to die down, before stopping, some remnants dripping off her folds. She just lied there, basking in the afterglow, not believing the pleasure she had just experienced.

Eventually after several minutes of just sitting, she looked down at her bladder, which was now completely empty and flat against her body. Over two days of pee had finally been emptied... past her holding muscles, and past her plump folds... She placed her hand on it, rubbing it a little, not used to the feeling of it being so empty. She eventually looked at her marehood, her folds laying limply to the side in exhaustion, exposing the inside of her beautiful pussy, drops of pee still inside, almost making it glisten with yellow.

She stared for a few seconds, before slowly getting up, feeling utterly exhausted. She slowly walked to her room, a couple drips of pee dripping off her folds in the process, before letting herself fall on the bed. She moaned deeply as she closed her eyes, gripping the covers lightly before quickly falling asleep, her body still completely exposed as she slept.


She eventually woke up the next morning, groaning lightly as she rolled over onto her back. Opening her eyes, she stared up at the ceiling, exhaling slowly in relaxation. Something didn't quite feel right.. the room felt a little colder than usual, but in a slightly different way.

It took her awhile to realize she still naked. Upon remembering why, she began to remember the events of the previous day, causing her to smile. She had held it for so long.. and successfully. As she sat up, she couldn't help but think she was forgetting something.. something important..

Her ears perked up as she remember about the camera! She got up off the bed and looked for it, eventually finding it on the floor next to her bed. She proceeded to bend down to pick it up, very curiously checking the image afterwards. Her eyes widen slightly in arousal as saw it.

It looked.. perfect. It showcased her bulging bladder, completely full to the brim... and her plump, puffy folds.. swollen and puffed out further than usual.. drips and trinkles of pee being sprayed out.. the sight of it turned her on immensely. To see herself on the verge like that.. her marehood so puffed out.. pee trickling through.. She knew what she was going to fap to for the next few months, as narcissistic as that might be.

She couldn't help but think, though, that she could last longer.. There was no way that was her limit. She knew she could last longer than that.. At least to three days. she just knew it. She was sure she could've at least clenched harder, or done something to hold it in longer. It couldn't of been her real limit. For now, though, she was going to take a small break from holding it. She decided to try and train herself in the meantime however-- there was no way she was going to let herself not make it to three days. That was going to be her goal to strive for from now on..

Proving Herself

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One month had passed since Rainbow Dash last attempted to hold in her pee for as long as she could. During her long break, she had practiced and trained the muscles she used to hold in her urine and keep it safely tucked in her bladder, where it was supposed to be. After having done some research at Twilight Sparkle's library, she learned of something called Kegel Exercises-- movements that had the goal of strengthening the muscles used down below-- and had begun to train her external urinary sphincter through the techniques shown in the book, which ranged from repetitive, rhythmic squeezing, to intense and pro-longed squeezing.... Rainbow had fierce motivation to better herself and keep her bladder contained for longer and longer amounts of time, and she already felt like she had noticed a difference, as control over her urethral sphincter felt more precise. She was extremely eager to try holding it for as long as she could once again, and she felt like she could hold in any amount of urine, no matter how great.

No matter how hard she looked, however, Rainbow wasn't able to find anything pertaining to the subject of holding in pee with the outer-lips of her marehood. Even in the anatomy books she was unable to find anything that hinted to any sort of control in that area, which caught her as strange. Was she just a rare and special exception..? She would've loved that type of unique specialty, but the critic in her kept her unconvinced. She had contemplated asking Twilight about it, but eventually decided not to purely out of embarrassment. Twilight was a friend of course, but not exactly that close of a friend. Nevertheless, Rainbow still took it on upon herself to train her folds in any way that she saw fit. She wanted to have stronger and more precise control over them, just like with her urethral sphincter, so she could hold in her pee with them for longer than just around a minute.

As of right now, it was the late evening, and Rainbow Dash was eagerly pacing back and forth in her bedroom. She had been looking forward to holding it in as long as she could ever since the last time she had held it over a month ago! She had been eager to reach her goal of three whole days, and at this rate, she was easily going to reach it... It had already been two days since she last peed, and her bladder was a firm, protruding bulge down at her exposed lower-abdomen. She definitely didn't feel as desperate as she would've felt last time by now, and she felt proud of that fact. She felt like she could hold in anything!

Walking over to the mirror that was attached to the wall above her wooden, dark blue dresser, she looked into it, examining her completely unclothed self. Ever since the events that had happened a month ago, Rainbow had grown to love the liberating feeling of being naked, and had quickly gotten into the habit of undressing herself at night before going to bed, among other private and even outdoor times. She looked at the D-cup sized breasts that were hanging freely and exposed from her chest, and she admired them, before letting her gaze trail further downwards to something that was even bigger-- her bladder. Her bulging bladder looked so firm and full against her lower-belly, and Rainbow began to grin widely at the sight of it. All of that pee was actively being held in all by herself... She was securely clenching her urethral sphincter, not letting a single drop slip past her tight hold, and Rainbow couldn't help but feel proud of herself as she examined her large bladder bulge-- she hadn't even reached the third day yet and it was already so easy! Her previous goal of three days was going to be shattered without a glimpse of sweat, and Rainbow was brimming with confidence as she brought a hand over to her bulge, softly rubbing the palm of her hand across her smooth, protruding organ. She could only imagine just how much fuller it was going to be when she woke up tomorrow... and the thought of it only excited her. She wanted to know her limits more than ever now, because at the moment they felt limitless.

Rainbow continued to admire the reflection of her bladder bulge for a few more seconds, before turning and making her way over to her bed. She looked down at it as she approached it, and then crawled on-top of it, her round and bare butt being pushed out and shown off to the mirror as she crawled over to the center of her bed. With her eyes half-lidded, she moaned softly, loving every bit of the looming feeling of fullness down at her lower-abdomen as she crawled on her hands and knees. The feeling made her feel more in control than ever, and upon reaching the top-end of her bed, she turned around, laying down on her back and pushing her bare legs together. Her pillow cushioned her neck and held it up slightly, allowing her to gaze down past her exposed boobs and at the beautiful bulge protruding down above her marehood-- a pussy that had absolutely no signs of opening the floodgates to the looming organ above it anytime soon. Rainbow grinned softly, and stretched her legs forward, letting them and her thighs press down against the bed whenever her filling bladder made her have to squeeze with more intensity. This was the fullest she had ever been before going to sleep, no doubt, but she had no worries at all over wetting the bed as her smooth legs rubbed against each other. She felt more confident than ever towards that special area in-between her inner-thighs.

She was thankfully not too worried about having trouble getting to sleep due to her exhaustion, and she let the back of her head rub back and forth against her pillow as she relaxed. Tomorrow was going to be an interesting day for sure, and she knew it... She was going to have to go to work at the weather factory, for the whole day, with her bladder fuller than it had ever been before. Thinking about it made her worry of possible undesirable outcomes. What if she couldn't hold it, Celestia forbid, and peed herself in-front of her coworkers..? That would be the worst possible outcome, and she couldn't imagine the embarrassment she would experience over something she was so prideful towards. Others included having to rush to the bathroom-- a sign of weakness to her holding abilities-- or becoming the talk of the day if she outwardly showed too much desperation. She liked the thought of showing off her bladder as well, but at the same time she wouldn't want to get too much attention, just in-case it ended up getting too difficult to hold it with calm composure, or worse... As harmful as it was to think about, she couldn't stop imagining all the negative things that could happen. With a soft groan, Rainbow turned to her side, tucking in her legs and nuzzling her pillow. To her, there was only one thing that she absolutely had to stick to-- she had to be confident. There was no one else that could've been more suited for this task, and if she tried her absolute hardest, there would be no way her bladder would win, especially if the other outcome meant extreme embarrassment and humiliation.

Exhaling, Rainbow closed her eyes, rubbing her legs together and squirming lightly against the bed. The constant urge to urinate was making it more difficult than usual to go to sleep, but Rainbow eventually drifted off anyway. Her marehood was still completely exposed to the air, which was how it would stay all night long; if she were to leak at all during her sleep, there would be absolutely nothing to help absorb some of the flood aside from her bed. It was another testament to her confidence in her holding abilities, and her pussy could almost be seen as proud as it remained tucked uncovered in-between her thighs, barren of any pee. She was the only one in control of her bladder, and tomorrow would be the ultimate test over who was the boss of who.


Upon waking up the following morning, the very first thing that was on Rainbow Dash's mind was her bladder. She felt as if she had been thinking about it all throughout her sleep, and as her mind cleared up, she felt excitement, relief, nervousness... Excitement and relief that her large bladder remained full as felt by the intense pressure down there, and nervousness as to what her work day would bring. Opening her eyes, Rainbow stared directly in-front of her, before reaching a hand down to her bladder bulge... Her eyes went wide as she caressed the huge, firm bulge with her fingertips, and the rainbow-maned mare couldn't help but let out a shaky moan and a grin. It was full.... very, very full.

Her curiosity got to her, and she tilted her head down to look at the very thing she had been obsessing over. What she saw was a huge, almost basket-ball sized bulge protruding at her lower-abdomen, and she gasped quietly at the sight. It was bigger than she had ever seen it before.... It looked so firm, her bladder walls no doubt stretched far beyond what they were used to. She could only imagine the enormous reservoir of pee being held in there, and the thought of it made her feel incredibly proud of herself. It was so full, and she knew it. She was holding all of that in by herself.

"Oh-my-gosh..." Rainbow Dash marveled at her accomplishment, and brought her smooth legs close to each other, rubbing them together and squirming a little. "It's sooo full.... this is so awesome..!" Rainbow giggled quietly to herself in celebration, and gently rubbed her fingers across the firm bulge more. She was loving every little bit of her phenomenal bladder, and she slowly rolled over onto her back once more, which caused her to feel the weight and the pressure of her gigantic bladder bear down against her body. It was so intense that Rainbow found herself rolling back onto her side, caressing her bladder bulge with her hand with concern and affection. It was very full...

"What time is it..?" Rainbow muttered to herself, perking her head up slightly and squinting her eyes to look at her clock. As she had expected due to how she felt, she had woken up an hour earlier than she was supposed to, which wasn't a good thing at all. By then her bladder would likely be bothering her alot, and Rainbow frowned. The more time she spent idling around in her house, the harder it would be to hold it at work, so she decided to just lay in bed for the time being. Looking back down at her huge, protruding bladder, she rubbed it softly, fidgeting ever so lightly against the bed. She imagined her pussy that layed completely exposed between her legs, the very thing that had remained free of any pee for so many days and what helped give her confidence. She hadn't trained for nothing, and the thought of it being there helped to comfort any worries that lingered in her mind. She could always just press those outer-lips together in-case of any emergencies, which would potentially save her from extreme embarrassment.

'Gosh it's so full....' Resting her head back down against her pillow, Rainbow exhaled slowly, keeping her legs pressed lightly together as she fidgeted back and forth without much effort. She gave her bladder very light pats with the palm of her hand, feeling just how firm and solid it was beneath her skin. She gazed down at it for a few seconds before closing her eyes, relaxing into the bed. It didn't take much longer, however, before she began to lull back to a light sleep before she even realized what was happening.


Rainbow Dash stirred awake some time later and groaned as she slowly opened her eyes. She felt refreshed to not be as tired as she was before, and she squirmed on the bed while she opened her eyes. She was at first confused, blinking her eyes a couple times, before it finally occurred to her that she had fallen asleep. She might be late for work! Rainbow gasped and her eyes went wide open at the realization, and she quickly turned her head to look at the time to see that it was three minutes to seven o'clock. She had to be there at seven.

"Damnit I fell asleep!" Rainbow cursed to herself and quickly sat up on her bed. Immediately after she did so, however, she was fiercely reminded of the over-filled organ down at her lower-abdomen. She gasped and pressed her legs hard together, sitting straight up and squirming on the bed.

"Gah I forgot!!" Rainbow continued to squirm, scrunching her face and squeezing her eyes closed, but didn't spend much more time sitting on the bed otherwise she would be late. She quickly made her way off of the bed and then gasped again when she stood straight upwards with her feet on the floor. With gravity now pressing her urine down against her urinary sphincter, Rainbow winced, almost overwhelmed by the urge right then and there. "Ahh!" Rainbow speedily walked in place, her feet rapidly tapping the floor and her bare breasts bouncing lightly as she struggled against her bladder. Upon regaining composure a few seconds later, she quickly rushed to her dresser for her clothes.

'There's no way I'm gonna have time to pee before I leave!' Rainbow thought to herself as she hurriedly brought out her clothes for the day. She pressed her plump flank cheeks together and bounced up and down a tiny bit as she put her clothes on her bed, and then began putting them on, starting with her black shirt. She hastily pulled it over her head, bringing her arms and hands through the holes while also unable to resist glancing down at her cleavage through the V-shaped opening at the top of the shirt. She panted softly as she moved on to her white panties, and she briefly considered putting them on before abruptly deciding not to. She was in a hurry and had quickly thought that the extra freedom would make it easier for her to hold it. She moved to her blue skirt instead, and shuddered knowing that she was going to have to lift her legs up for this.

Rainbow breathed in deeply and lifted up one of her long and smooth legs, hopping on one foot and then quickly lowering her other leg as soon as she could. She bounced up and down fiercely as she quickly moved onto the other leg, and upon pulling up her skirt, the light-blue pegasus groaned deeply at the feeling of the fabric pressing and squeezing around her firm, protruding bladder. She trembled and pressed her legs hard against each other as she looked down, observing just how prominent her bladder bulge was against her skirt. The clothing almost seemed to make her bladder even more noticeable than it already was as it outlined around her bulge, and Rainbow's right leg twitched as she continued to stare down at the over-filled organ. It was so full and it bulged so far outwards, and Rainbow's face scrunched up as she tried to hold in an intensifying urge.

'It's so full...!!' Rainbow found herself unable to stop staring at her crowning accomplishment, and she kept her legs pressed firmly together while she admired it. 'How in Equestria am I supposed to work like this? I..' Rainbow's head perked up and she jolted slightly when she heard her clock go off, telling her it was now seven in the morning. She had to be at work at this exact time, but yet here she was still at her house.

'I got this. Only I can do this!' Rainbow gulped as she tried to remain confident in herself, and she quickly made her way out of her room, not wanting to waste anymore time. She was finding it difficult just trying to seem natural as she hurriedly made her way over to her front door, with her gait tense and her legs staying much closer together than they normally would. When she approached her front door, she opened it and stepped outside, being met with the slightly chilly morning weather that only made her more desperate. The sun was already starting to rise and brighten up the outside world, which it wouldn't normally be doing right now if she was on time.

'I am the boss of my own bladder.' Rainbow un-folded her wings and stretched them out, arching her back slightly and trembling from the pressure she was putting on her stuffed bladder. She then wasted no further time and started flapping them, lifting herself off the ground before speedily flying towards her workplace.

Rainbow's flight there was spent constantly on edge. She was forced to squeeze her already exhausted urethral sphincter nearly as hard as she could throughout the entire trip, making it substantially more difficult to hold it whenever her bladder tried to contract and push against her sphincter with further pressure. By the time she arrived at her workplace she was left panting and with slightly shaky legs as she hurriedly made her way inside. She rushed her way into the room where her manager would give the orders of the day to all the employees, and caught her as she was just making her way out.

"Hey wait!" Rainbow called out. "Yeah I know I'm a little late Spitfire, just tell me what I gotta do today and I'll start right now."

Spitfire paused her exit, turning her head to look at Rainbow. "Oh? Usually if you haven't shown up by now, you don't show up at all." She turned all the way around, her hands on her hips as she noticed Rainbow's panting and frigid state. "Jeesh, what's got you all worked up? Did something happen?"

Rainbow was currently trying her hardest to act natural, although it was nearly impossible when her bladder was pushing so hard and her pee felt like it was on the verge of leaking out past her quivering sphincter. She winced, giving a rather long awkward silence before responding. "Y-yeah! I mean no! I just, uh, rushed here really fast."

Spitfire raised her eyebrow, stepping closer to Rainbow as she began to examine her. "Your words and your body language sure aren't matching... up..."

"I.. just tell me what to do and I'll do it super fast. Alright?" Rainbow's legs trembled, and she blinked, not noticing Spitfire's silence until a few seconds later. She looked right at her, only to see that the vibrant yellow pegasus was staring downwards... right at Rainbow's bladder bulge, blatantly outlined by her skirt. Rainbow felt a rush as she watched her stare right at her full, prideful bladder, and her cheeks flushed a tiny bit red as the next couple seconds passed by in silence.

"...You okay, Dash?" Spitfire asked, who was clearly in shock and even confused at just what she was seeing.

"Never been better~" Rainbow replied, trying her best to seem confident in her holding abilities. "I just uh, haven't peed in like three days. No biggy."

Spitfire blinked, tilting her head back up to look at Rainbow directly. Her mouth opened to speak, but she didn't say anything at first as if she was at a loss for words. "Did you say... three days, Dash?"

Rainbow nodded her head and began to smirk. "You bet! When you're awesome like me it just kinda happens naturally~"

"Really now?" Spitfire glanced down at Rainbow's bulge before looking back up at her. "Actually, I've got something else you can do for me today, but only if you're interested. Otherwise you can just spend all day toiling around helping set up for tomorrow's rain storm."

Rainbow's head perked up at this, and her legs stood tense and locked at the knees as she tried her hardest not to show any desperation. "Something else?"

"Yeah. Come with me Dash." Spitfire turned around, and, not wanting to do her usual boring work, Rainbow decided to follow. Her heart pounded in her chest, and she couldn't resist lowering her hand to rub it across her bladder as she walked.

'What could she want me to do? It better not be something too crazy-- oh my gosh I could never pee myself in-front of Spitfire! I gotta hold it... I gotta hold it...' Rainbow followed Spitfire into her office, where she closed the door behind her and locked it. All of a sudden Rainbow could tell that this was going in a totally different direction-- this wasn't going to be work related at all!

"Three days, huh?" Spitfire asked, turning around and leaning back against her desk. "Shame you're not gonna reach four~"

Rainbow could hardly contain her excitement that she was alone with her one of her idols in her own office, but if there was one thing that was harder for her to contain, it was her bladder. Despite that, Rainbow tried her best to seem as least desperate as possible as she stood tall. "Is that a challenge?"

"No." Spitfire replied. "There's just no way you're going to have a full bladder by the time I'm done with you."

Knowing where this was going, Rainbow acted first, grabbing her skirt and pulling it straight down. In a blink of an eye, Rainbow's absolutely massive, over-filled bladder was fully-exposed without a single speck of clothing fitted over it. Right below her looming bulge, her pussy could be seen, looking as pronounced as ever with its smooth and puffy outer-lips-- the very pussy that had an ocean of pee being held behind it. The sight was no-doubt mesmerizing, and Rainbow smirked as her skirt lied around her ankles. "Sounds like a challenge to me~ Still think you've got a chance?"

Spitfire's eyes went wide open when she saw Rainbow's skirt drop down to the floor, and she stared directly at her distended bulge and at her vulva in shock. "...You've got guts, Dash, just doing that right in-front of me."

"Don't act like it wasn't gonna happen anyway!" Rainbow leaned with her back pressing against the door. "I just thought I'd show you what you're dealing with." In truth, Rainbow was just barely managing to hold on. She couldn't stop her legs from trembling, and with every second that passed by she could feel just how close her pee was getting to exiting. Her external urethral sphincter was so exhausted, but yet she still forced it to keep squeezing as tightly as she could manage...

Spitfire stood up, making her way over to Rainbow and leaning down towards her lower-belly. "That bladder is huge Dash, holy cow." Spitfire remarked as her eyes scanned across the monstrous bulge. Rainbow held her breath, clenching her urethral sphincter as tightly as the tired, abused muscle could respond. She was trying as hard as she could, but at this rate she felt like she was going to start leaking soon if she didn't do something... She was surprised her pee hadn't pushed far enough to exit already, and Rainbow winced as she tried to stay still.

"Y..yeah..." Rainbow looked down, watching as Spitfire looked all across her bulge. Rainbow felt her heart beat faster and her breathing get more shallow as she felt herself get closer and closer to peeing right on Spitfire, and for a moment she felt like she was about to lose control. Her eyes went wide, and she clenched her fists, tilting her head back and squeezing
her eyes closed.

"A-ahh...!" Rainbow let out a panicked whisper, and she just couldn't hide it anymore as she slammed her legs together. Her face scrunched up as she felt her pee pushing so hard against her urethral sphincter, and she struggled to get the tired ringed muscle to squeeze any tighter. No matter how hard she squeezed, though, she felt as if her pee was right there on the verge of exiting, and she silently screamed as she managed to hold it back by the tiniest of threads.

"Rainbow!" Spitfire exclaimed with a concerned tone of voice as she moved her head away. "What's going on?"

"D-don't worry about it." Rainbow replied, abruptly letting out a breath she was holding and panting. She looked down towards her prominent bulge and slowly brought her hand over to it, gently rubbing her fingers across it. "I just.. couldn't keep my legs spread like that." Rainbow's vulva pressed and squished against her thighs, and Spitfire eyed it carefully as she leaned her head back towards Rainbow's bladder.

"Well, you put on a decent show for like a good five seconds." Spitfire commented as she watched Rainbow's legs pressing and grinding against each other. "You actually had me convinced you weren't about to piss yourself."

"I'm not." Rainbow frowned. "Don't even think for a second that I'm going to pee in this room."

"Hmm~" Spitfire glanced at a nearby clock on the wall. "You've got 'til eight, which is about an hour from now. If you can hold it until then, I'll let you out free for the rest of the day."

"You're on." Rainbow responded with a grin, only for Spitfire to continue quickly afterwards.

"But!" She paused, stepping even closer to Rainbow. "I get to do whatever I want to you before then..." Spitfire reached her arms over to Rainbow's thighs, grabbing them and squeezing them while they pressed so firmly together. "Which just happens to include spreading those big, strong legs of yours far, far apart."

"Spitfire.." Rainbow groaned and gulped, looking down and watching as the yellow-orange pegasus gripped and played with Rainbow's thighs. "I'll flood out this entire room if I let go."

"Then you better not let go~" Spitfire smirked, grabbing Rainbow's legs and forcing them apart. The light-blue mare gasped at this, jolting her body and breathing in sharply as she was forced to squeeze her urethral sphincter as hard as she could.

"Ahh..!!" Rainbow squeezed her eyes closed and clenched her fists, suddenly finding herself having to hold it with absolutely no support from her legs-- her urethral sphincter was all by itself. Spitfire watched with wide eyes as Rainbow struggled so perilously right in-front of her, jerking her legs against Spitfire's hands and thrusting her body forward. Each time she thrusted her pussy would just barely not touch Spitfire's face, and she stared at it with wide open eyes, taking in every little detail of how the outer-lips were so plump and smooth. She couldn't imagine just how much pee was being held behind there, with that looming, gigantic bladder bulge located right above. She had gotten so distracted that she didn't notice how frantic Rainbow had gotten, and she only let go of her legs the instant she saw droplets of pee begin to sprinkle out.

"MMMMN!!!" Rainbow's legs immediately slammed together with a loud smack, and she doubled over, trying so desperately not to let go. For a quick moment Spitfire became worried that she had already pushed her too far, and she bit her lip as she watched Rainbow squirm and fidget so wildly. Her pussy wasn't even visible anymore due to how deeply she was pressing her thighs together and bending over, and her legs trembled as she fought against her bladder.

"Uh, Dash." Spitfire spoke, but she didn't really know what to say as she watched-- she couldn't seem to look away. After several seconds passed, Rainbow abruptly stepped away from the door, hurrying over to Spitfire's desk and carelessly pushing papers and documents out of the way so she could sit down. Her plump flank pressed against the wooden surface of the desk, and her legs crossed and raised upwards in yet another attempt to force her exhausted urethral sphincter squeezed closed.

"If you do that again... I'm going to grab your head and shove it down there." Rainbow spoke as she tried to catch her breath. "Because it's all going to come flooding out if you do."

Spitfire stepped closer and watched as Rainbow uncrossed her legs, instead opting to tap her feet rapidly against the floor. She couldn't keep still, constantly fidgeting and bouncing her flank up and down against her desk-- it was a wonder she was still holding on to begin with, and it hadn't even been ten minutes yet. "You're not going to make it out of here with that big, full bladder intact, you know." Spitfire exclaimed softly as she approached Rainbow's legs, to which she crossed them again. "You've sealed your own fate with me in here~"

"I'm not going to let you do that again." Rainbow replied, crossing her legs even further and almost double-wrapping them at this point. Spitfire laughed at this show of defense and climbed up on the desk with her, sitting on Rainbow's lap and looking into her eyes.

"If you cross them anymore you're gonna tie them into a knot." Spitfire commented, raising her hand up and rubbing it across Rainbow's arm. Rainbow watched her closely, not feeling very sure about the mischievous smirk Spitfire was putting on as she slowly brought her hand down to the bottom of Rainbow's black top. She gripped the end of it, but Rainbow grabbed her wrist, stopping her from lifting it up.

"Not until you start taking some of your own clothes off." Rainbow stated, squirming her flank back and forth against the desk. Spitfire rolled her eyes at this, letting go of the top and instead bringing her hand over to Rainbow's bladder. She rubbed softly across the huge, firm bulge-- almost too softly-- and Rainbow's eyes started to go wide at all the implications of where this could go.

"Crossing those legs of yours can't stop me from pressing down on this bad girl." She spoke as she looked downwards at the bulge, tapping her fingers against it and feeling just how firm it was. "If you don't let me take off your shirt, I'm going to press down so hard on this protruding bulge of yours..." She grinned and rubbed her fingertips across its smooth surface. "It's all gotta go somewhere."

Rainbow fidgeted and squirmed faster in response to all the light touches she was giving her bladder, and she gulped, not even knowing if she would be able to hold it with her outer-lips if she were to press on it like that-- there would just be so much pressure. "You wouldn't do that... we just started. And besides, it'll get all over your desk and all your stuff."

Spitfire gave a short, quick press on Rainbow's bladder, causing her to gasp and jolt. Her legs twitched and tensed as she tried to squeeze her abused, ever-unresponsive urethral sphincter harder, and Spitfire leaned her head in closer as she looked into Rainbow's eyes. "Off with the shirt. Now."

Rainbow narrowed her eyes, reaching her hand down, but grabbing onto Spitfire's hand instead of her shirt. "Not until you take something off."

Spitfire sighed, shaking her head and then laughing slightly at Rainbow's continued disobedience. "Oh Rainbow, you do not want to know how hard I'm going to make this on you. This is going to be the longest hour of your life."

"I'm going to hold it." Rainbow replied. "You better step of your game if you think you're going to win."

Spitfire laughed more at this, rubbing across Rainbow's bladder and letting out a content exhale. "Fine." She brought her hands over to her coat and grabbed the zipper, pulling it all the way down until it came off, revealing her white shirt underneath. She threw the jacket to the side and then pulled her shirt off over her head, revealing her black bra and her breasts tucked behind them. They appeared to be bigger than Rainbow's by about a single cup-size, and Spitfire crossed her arms. "There, you've seen my tits-- now take your shirt off."

"Uh, you've still got a bra on." Rainbow replied with a frown. "I'm not seeing anything."

Spitfire lowered her hand and pressed it right on Rainbow's bladder, causing her to jolt and breathe in sharply. Unlike the other times though, she didn't stop pressing, keeping her hand digging deep down against Rainbow's over-filled organ. "I said take it off-- I'm not playing anymore games."

"Alright alright just stop!!" Rainbow gasped, holding her breath and squirming wildly against the desk. Her hold on her bladder was quivering so intensely, and she arched her head back, squeezing her eyes closed and silently screaming until Spitfire finally lifted her hand up. Rainbow's legs rubbed and twitched fiercely as she struggled to cross and press them even tighter together, and her hands gripped the end of the desk firmly as she let go of the breath she was holding. "Ahh..." She panted shakily and looked back at Spitfire. "B-but... I'm not taking my bra off until you do."

"Deal." Spitfire responded. Rainbow tried her best not to smirk at this, and she lowered her hands, grabbing her black top and then pulling it over her head. To Spitfire's surprise, however, what she saw was two fully-exposed, uncovered boobs right in-front of her-- Rainbow hadn't been wearing a bra at all! Spitfire's eyes went wide as she gazed at the way they layed so freely against Rainbow's chest with her dark blue nipples pointed right at her, and Rainbow grinned widely at this, breathing in deeply and stretching her arms up above her head.

"Your turn." Rainbow spoke, watching as Spitfire's cheeks flushed a faint red. She clenched her teeth, looking to the side and rolling her eyes as she brought her hands behind her back. She unhooked her bra and then fiercely tossed it aside, exposing her large, yellow breasts right to Rainbow.

"Try anything like that again and I'm gonna press down until you piss yourself." Spitfire spoke with a firm tone. "You won't even be able to last three seconds."

"Not true." Rainbow rebutted. "Go ahead and try right now and I'll prove that to you."

Once again Rainbow's mouth was speaking the complete opposite of how she felt. A feeling of nervousness became apparent as Spitfire was seemingly tired of Rainbow's confidence as shown by her unamused expression, and she brought her hand right over to Rainbow's protruding bulge, not even hesitating at all before pressing right down against the over-filled organ. Rainbow gasped and her legs jolted as she struggled to somehow either cross them even tighter or press them harder together. Everything was tucked so closely down there, trying everything in her power to aid her urethral sphincter. Her hold on it was so weak and it was quivering so intensely though-- even with her legs pressing and crossing as tightly as they possibly could. The pressure for her pee to escape was becoming overwhelming, but Spitfire was still keeping her hand pressed down firmly. Rainbow couldn't handle it...

Buried in-between her tense, shaking thighs, her pussy was hidden-- almost as if it was too embarrassed to show itself at this moment. It didn't matter how tucked or hidden from view it was, though, because it was still perfectly capable of leaking and letting all of her pee flow out anyway. Rainbow's body jerked and her eyes went wide as a sudden burst of energy ran through her body-- she felt like she was about to pee herself! Alarms went off in her mind and she grabbed onto Spitfire's hand, but she wouldn't budge it, an action that made her realize that she was going to pee herself.

"AHHH!!!!" Rainbow panicked as she felt her pee push further and further past her exhausted hold, but she felt powerless to stop it-- it was only a matter of less than a second before it pushed far enough to reach the exit. In a last ditch effort not to pee herself, she tried to press the outer-lips of her vulva together, only to find that there was a problem... Her thighs were pressing so hard together and tucked in so far that they were pressing against her plump lower-lips, squishing them and not allowing them to press against each other securely. Rainbow squirmed violently back and forth as she tried to un-cross her legs, but they were crossed so tightly and she was so frantic that she couldn't uncross them in time. Pee began to leak out past her vulva, and Rainbow's body froze up as she realized that she was peeing herself.

Spitfire's hand finally moved away from Rainbow's bladder, but it was too late at that point as pee sprinkled out past her pussy. It wasn't visible at first due to how deeply hidden it was behind her thighs, but it soon became apparent anyway as it puddled around her flank and dripped down the desk. Rainbow was shocked and devastated that she had let this happen, and her cheeks flushed bright red as she found herself too ashamed to look up at Spitfire. Her hold on her urethral sphincter was still half-attempting to squeeze in a vain attempt to hold it, but it was doing nothing but slowing down the flow just a little. She felt the urge to just let it go completely and relax-- to let it all flood out freely with no restrictions-- but Rainbow wasn't that type of person. She didn't want to believe she was letting this happen, not so soon, and she breathed in deeply as she started to move her legs. As soon as she began to lift her legs to uncross them, though, she found herself letting go of her urethral sphincter completely-- it felt practically unresponsive and she was too overwhelmed in bliss to even think about trying to clench it again. Her pee was now flowing out at full force, barreling out past her vulva, but she still wasn't going to give up just yet.

Once her legs were finally completely uncrossed, she flexed her pussy, pressing the puffy outer-lips against each other. Her hands tightly gripped the edge of the desk as she felt the urge to just let go and give up right then and there as she abruptly cut off the gushing urine with her folds. Her teeth clenched and she held her breath as a small bit of pee dripped out past their hold, and then she shakily exhaled as she managed to slowly start regaining some composure. She had stopped the flow... somehow... and only for now.

"Jeesh Rainbow, you can give up now." Spitfire commented. "You lost control, just accept it. By the way, you're cleaning up that mess."

"Accept that I'm going to lose? Never." Rainbow panted heavily and her body was covered in sweat. "I'm holding it again, Spitfire... if you took the time to look you'd notice that."

Spitfire blinked, and Rainbow watched as she looked straight down at her pussy. It wasn't hiding behind her thighs anymore, and Rainbow couldn't resist looking down at it as well, only for her eyes to go wide at the sight.

'Oh my gosh...' Her entire pussy looked like it was swollen with how far her outer-lips were bulging out, where Rainbow could only imagine how much pee was pooled behind them. They were being pushed so far by her ocean of pee, but still they held strong, keeping it all held back and in her bladder. Her pussy was being proudly shown off, looking more prominent than it had ever been, and not just to Rainbow but to Spitfire also-- she was in complete awe over what she was seeing. She couldn't seem to believe it, and she slowly began to step closer as her eyes remained glued to that pussy.

"H..How? No seriously-- you were just pissing yourself a second ago. How are you doing that?"

"Yeah, I did... and then I held it again when you stopped pressing on my bladder." Rainbow felt the urge to spread her legs wide apart and show off her vulva even further, but she didn't-- that would make it too obvious that she was doing something else to hold it.

Before Spitfire could examine Rainbow's pussy more closely, she stood back up, where droplets of pee dripped off her flank and rolled down her legs. "Now you're going to be the one cleaning this mess up-- unless you want me to let the rest of this out, that is."

Spitfire didn't even bother protesting-- she was too amazed that Rainbow was still holding on, and she felt like she deserved it. Rainbow watched as Spitfire looked and then grabbed a nearby towel hanging off a rack, using to clean off the small mess that had been made on her desk while occasionally glancing back at Rainbow. The cyan pegasus was standing tall with one leg slightly in-front of the other, rubbing her thighs against each other slowly. Rainbow knew she could only hold it like this for a couple minutes-- maybe even less since she had cut off such a strong stream right in the middle. She was still faring pretty well for the moment, and she made sure to make the most out of every second that went by with her external urethral sphincter relaxed. It felt truly incredible, and she dreaded when she would soon have to re-squeeze that poor, exhausted muscle.

Once Spitfire had finished wiping down the desk, she made her way over to Rainbow, eyeing her directly before letting her gaze trail downwards. "You're oddly calm." She spoke as her hands gripped at her hips. "And don't tell me it's because you're 'good at hiding it', because nobody is this good at hiding it right after they almost pissed themselves."

"Well, nobody is good at holding it with a hand pressed right against their bladder either." Rainbow replied. "Plus it doesn't hurt when you're someone like me~"

Spitfire exhaled, rubbing the towel along Rainbow's hips and examining every part of her lower-body as she slowly brought the cloth down across her legs, cleaning up all the droplets of pee that had dripped down. Rainbow's vulva was only partially visible due to her slightly crossed legs, and Spitfire couldn't help but stare at what she could see as she wiped Rainbow down. Her hands pressed firmly against Rainbow's plump, taut flank as the towel soon reached there, and Rainbow could feel her warm, soft breath right against her bladder bulge. Spitfire was clearly enjoying this, and Rainbow smirked softly as she watched.

"It's so full, isn't it?" Rainbow spoke, slowly lowering her hand and rubbing it across her bulge. "It's been what, half an hour so far? That bladder is still in-tact Spitfire~"

Spitfire glanced at the clock and rolled her eyes. "So what? You've still got twenty-five minutes Dash, and you've already almost pissed yourself once. Yeah you made it this long-- I admit it I'm impressed-- but you're not going to last until the end. I'm not done with you yet."

Rainbow breathed out shakily as the towel rubbed across her bulge, and she felt a ting of nervousness at the thought that she might press down on it again. She didn't though, and stood back up, folding the towel and glancing at Rainbow's exposed breasts before putting it aside. Rainbow was starting to feel the difficulty of keeping her precious outer-lips pressed together for so long, so she quickly did something about it by moving back over to the desk. She sat her dried-off flank onto the wood, and carefully crossed her legs at the knees, looking at Spitfire and watching her as she approached.

"Spread them." Spitfire commanded, standing in-front of Rainbow's legs and looking directly at her. "Right now. Or I'll do it for you."

Rainbow hesitated, trying her best not to appear nervous as she looked back at her. She could definitely spread her legs like this-- pretty easily actually-- but she knew she wouldn't be able to for long. Her folds were straining to stay pressed together, something that even amazed Rainbow herself considering how much training she had done beforehand, but if it wasn't for that training, she wouldn't have even lasted this long to begin with. Gulping, Rainbow slowly began to spread her legs to the sides, but only enough to give room for Spitfire to step in-between them. Her swelled pussy was completely presented like this, but she didn't want to give Spitfire any chance to catch on to what she was doing. Her lower-lips were straining, pushed outwards so far from the inside, and Spitfire was slowly getting on her knees-- if there was any time to try holding it with her urethral sphincter again without Spitfire catching on, it was now.

Rainbow felt a brief rush of panic at how rushed she felt to make this change, and with barely any time to prepare, she breathed in deeply and squeezed her urethral sphincter as hard as she could manage. Her heart pounded in her chest as she felt just how unresponsive the ringed muscle was, but it was too late to turn back now-- she had already let go of the quivering hold she had on her lower-lips. Rainbow's body abruptly jerked and her legs kicked back against the table as she struggled to squeeze that exhausted ringed muscle of hers as hard as she could.

"Mmmnf!!!!!" Rainbow held her breath at first but then suddenly gasped as her hips jerked forward. Spitfire was noticeably keeping her distance at first, with both arms resting on either of Rainbow's legs as she stared directly at Rainbow's pussy. The small amount of pee that had pooled up just behind her precious lips had trickled out, as well as a little more due to just how unresponsive her urethral sphincter initially was. Eventually, though, Rainbow seemed to regain at least some composure, and Spitfire scooted closer with a little more confidence.

"If you pee on my face you're going to regret it." Spitfire exclaimed, rubbing her hands up along Rainbow's legs until they reached her inner-thighs. Rainbow's hold on her bladder felt so uncertain, and she gulped as she watched as Spitfire's head leaned even closer to that warm, special area in-between her legs-- the same place that days worth of pee was so close to bursting out of. Rainbow's legs constantly trembled as she thought of her pee splattering all over Spitfire's face and drenching it, and she gulped as she squirmed her bare flank against the desk.

"Then don't do anything stupid." Rainbow replied, looking right into Spitfire's eyes when she glanced up at her to tell her that she was serious. The cyan pegasus simply watched as Spitfire scooted even closer in-between Rainbow's legs, so close that she could start to feel her warm breathing right against her vulva. Her bladder looked so ominous from Spitfire's point of view, bulging so incredibly far from her lower-abdomen... It was massive, filled with so many days of pee, and Spitfire could only marvel at it in amazement as she remained kneeled in-front it. Rainbow imagined just what she must've been thinking as she watched her so blatantly stare at the bulging behemoth.

'She's looking at it so much.' Rainbow thought to herself as she watched Spitfire's hands reach upward. They soon reached her bladder bulge, where she rubbed across it softly with the palms of both of her hands; they felt so smooth, and Rainbow whimpered quietly as she watched. Her bladder was trying so hard to empty-- so firm to the touch of Spitfire's hands-- and her legs remained tense and as close around Spitfire as possible as she trembled. She needed to pee, more than anything.. but like always, she was going to fight that urge, and she especially had to now that she had company.

"What was this again? Three whole days?" Spitfire commented as her finger-tips slid across the smooth bulge, serving to tickle Rainbow and make her cringe. "This thing is literally bigger than my tits." Both her thumbs and index fingers cupped either side of her bladder bulge, as if she was trying to make the organ even more pronounced. Rainbow meanwhile could only shiver and try her absolute hardest to squeeze while Spitfire played away-- what little bit of strength her urethral sphincter had gained during its few minute rest was already being mercilessly used as Rainbow clenched the poor muscle with all her might. She had to hold it...

"You like it huh?" Rainbow asked as her feet pressed firmly against the floor. "I bet you wanna see just how big it can get~" Spitfire laughed at this however.

"Don't think you're going to convince me to let you leave this room without peeing." She spoke as her head neared Rainbow's bladder. "Because that's not happening." Spitfire's elbows rested on either of Dash's thighs as she toyed with the cyan pegasus's massive bladder, rubbing it and being gentle with her touches and presses-- for now. The playing was teasing her so much though, and Rainbow breathed in shakily as she once again tried to force her poor holding muscles to squeeze with such tightness. Her trembling legs were clearly wanting to press together as shown by the way they continuously pressed harder and harder against the sides of Spitfire's body, but she wasn't letting that happen, keeping her pussy under pressure without much support from her legs.

Rainbow glanced at the clock-- she still had twenty minutes left, but how was she going to last that long? She tilted her head back downwards, gazing past her exposed boobies and at Spitfire to watch her. Her hands soon rubbed down from Dash's bladder, caressing and kneading her inner-thighs. She was so close to her prominently exposed vulva at this point, and Rainbow's face scrunched up when she felt Spitfire's warm breath right against the plump, smooth outer-lips. Everything Spitifre was doing was making her need to pee so badly, and her feet rapidly tapped the floor as she watched Spitfire gaze right at her pussy.

'Why is she getting so close..? Doesn't she know that's right where my pee is going to burst right out? Ahh!' She bounced her flank up and down against the desk-- she was clenching her urethral sphincter so extremely hard, but at times it still felt like it was just barely enough. 'Gah I need to pee so bad!!!! I can't believe it.. I need to show her that I can hold it. She's literally right there-- she's probably judging me. I have to... no no don't do that Spitfire are you out of your mind!?' Rainbow could only watch as Spitfire spread Rainbow's legs even further apart with her hands, pushing away her support and leaving Rainbow's pussy even more by itself. Dash sharply breathed in and bounced her flank even more violently against the desk, looking down and watching as Spitfire still kept her head right in-front of her vulva. She was either crazy or she wanted Rainbow to pee on her.

'I can't... Ahh!!! I can't bucking squeeze hard enough... oh gosh.. no no no...' Rainbow clenched her fists, pressing her feet so hard against the floor that she almost lifted her flank off the desk as she tried her best to squeeze that poor, abused urethral sphincter of hers. Spitfire could tell just how incredibly tense she was down there, with her vulva so proudly on display right in-front of her face. She was definitely impressed-- maybe that pussy of hers was a force to be reckoned with after all. Rainbow quietly whimpered as she manged to hold in that contraction from her bladder, but she knew she wouldn't be able to last another one. Her hold was quivering so fiercely, tempting her to just let go and finally give up. If her bladder did try to contract again, she knew she wouldn't be able to resist just letting go after so so long. As good as it looked, she couldn't keep holding it like this. 'I need to cross my legs... damnit Spitfire! I.. oh no...' Rainbow breathed in deeply as she felt another contraction-- it felt ever-so ominous like it was telling her she was only seconds away from peeing no matter what. In an instant everything felt so surreal as she felt her pee slowly pushing on through her urethra.. she knew she had to do something, but before she could, she and Spitfire suddenly heard a knock on the door. It was locked, but it was still loud and threatening enough to catch both of their attention.

"Spitfire, you in there? We need your help out here-- the cloud machine's not working." A voice on the other side spoke out. Rainbow could visibly see the anger on Spitfire's face as she stood up, muttering lots of nasty things under her breath as she went straight for her jacket laying on the floor. She didn't even bother with her shirt or bra, tossing the jacket on and then zipping it straight up. Rainbow had taken this opportunity to audibly slam her legs together, crossing them so so tightly and wincing from how desperate she had been. Even with the support from her legs, she still felt so perilously close to letting go of that shining achievement of hers at her lower-abdomen. Before Spitfire left though, she made sure to lean in close and whisper right to Rainbow.

"Don't even think about going anywhere." She spoke harshly as she looked into her eyes. "And if I find out you peed yourself before I come back.... oh you don't even want to think about the consequences."

As much as Rainbow wanted to either say something or show off, she really just couldn't-- she had to pee so badly that it was the only thing she could focus on. She simply watched as Spitfire made her way back over to the door, opening it quickly and then slamming it closed right after she walked out. Rainbow was now by herself in Spitfire's office, and feeling like she didn't have to hide her desperation anymore, she immediately stood up from the desk.

'GAH I have to pee so bad!!!! Just hold it just hold it just HOLD IT!!' Rainbow fiercely tapped her feet against the floor as she paced back and forth in the room. 'This is Spitfire and I only got like twenty more minutes and I just have to hold it!!! I can do this...' Rainbow couldn't stop her frantic pacing as her bare breasts constantly jiggled in response to all her movements. She was still totally naked, which in her mind was telling her that she had every advantage, but yet she still felt so incredibly close to her limit. She stopped her pacing for a moment to press her legs together, quickly proceeding to cross them and then double over, only to hastily un-cross them and continue with her rapid-step walking. Nothing she did seemed to help with her urge at all, and she held her head back as she cursed quietly to herself.

'Just have to hold for a little while longer... Mmf!!' Rainbow hurried over to the desk and sat back down, bouncing and crossing her legs as she squirmed back and forth. Her urethral sphincter felt so weak and exhausted, but yet she still forced the abused muscle to squeeze-- as she had been doing ever since she got here. Her hold on her bladder was shaky, but still there none the less. Upon looking downwards, she soon became distracted by just how much that bladder of hers was bulging-- it was almost the size of a basketball, tucked in so tightly and so full. She lowered a hand down to feel it, only to be amazed at just how firm and solid it felt. It hadn't peed in over three days... and just thinking about that made her want to keep going. She had gotten so far and went through so much trouble for so long-- she didn't want it to end. She wanted to push even further... to totally dominate her previous record. She had never seen that precious organ of hers so full before, but yet she still wanted it to get even fuller.. it was almost an addiction.

'Spitfire thinks I won't make it to four days, let alone out of this room... but I'll show her! Ahh..' Rainbow bounced her body up and down even more violently, trying to cross her legs even tighter. Her bladder had gotten so large that she could even feel it bouncing a little from her lower-abdomen, forcing her to stop for the sake of not making her urge to let go even worse. All she could think about was peeing, but she had to hold it... she had to hold it.....


Minutes passed, and Rainbow's struggles didn't get any better. She wasn't even aware of the time as she concentrated only on holding it-- on somehow making her urethral sphincter keep squeezing. It felt so numb and unresponsive by now, and at times it really felt like her pee was just going to start flooding out regardless of what she did. She didn't want to use the control she had over her precious outer-lips though-- she wanted to save that against whatever plans Spitfire had. She already had to fall back on them once already due to her, and she wanted to be ready for the next time.

Rainbow's body was coated in sweat, and she couldn't stop panting as she continuously squirmed and fidgeted. Her mane was messy and unkempt due to her struggles, as if she had ran a marathon, but it was all because of her bladder. Needing to pee was an understatement-- her bladder was demanding that she open the floodgates right now, and she didn't know how much longer she could keep fighting it. Each contraction from her spasming bladder felt like it might be the one that finally breaks through her barely existent hold, and she whimpered as she tapped her feet even harder against the floor-- and at the same time.

'Oh my GOSH I've never needed to pee so bad before... oh my gosh oh my gosh it's so bad!!! Wait no no no no..!!' Rainbow scrunched her face up as she felt yet another harsh contraction from her bladder, pushing against her hold with such a fierce, stinging intensity. She felt like she couldn't hold this one though, and in another vain effort to make it easier on her abused urethral sphincter, she abruptly stood up from the desk once again.

"Gah..!!" Rainbow gawked out-loud as she clenched her fists, squeezing the poor muscle as much as it could respond as she stood. She held strong for the first couple seconds, but with increasingly stronger quivers, she soon found that she couldn't keep that hold long enough-- and much to her dismay, a tiny bit of pee sprinkled past her vulva before the contraction ended. She doubled over and bowed her legs, practically running in place due to how fast her feet were tapping against the floor. She usually never let anything leak out-- was her dam that close to finally breaking..? Rainbow shuddered and breathed with a shaky pace, glancing down at her thighs as she felt a lone drop of pee warmly drip down them. Her bladder looked so gigantic, as if it was about to finally win...

'I have to squeeze harder... I just have to squeeze harder.' Rainbow grabbed the towel that Spitfire had used to clean her previous mess, bringing it down and clumsily drying up the small mess that had come from her intimidating leak. The temptation to use her outer-lips so she can just collapse and finally let go of that exploited urethral sphincter of hers was rising so high, but she wanted to be ready for Spitfire... She needed to be ready for her-- she needed to shock her in awe over her holding abilities. 'Just have to squeeze.... squeeze.... squeeze..!' Rainbow trembled as she tried once again to clench the unresponsive muscle, and she let out a breath she had been holding in her lungs as she looked down towards her bladder. Her hand reached out to rub across the monumental bulge, and she tried not to look away as she continuously paced and squirmed. She couldn't keep this up... how much longer did she have? Where was Spitfire anyway?

Right when she thought that, the sound of the door swinging open rang out, and Rainbow quickly looked to see Spitfire storming in with a bucket in hand. Upon closing it and locking it, she made her way straight over to Rainbow, and with a sinister grin growing on her face.

"Don't think I didn't forget about you." She said as she took initiative and grabbed Rainbow's arm. The cyan pegasus suddenly found herself being flung with her back right against the wall, and she wasn't able to hold back a small sprinkle of pee from the impact as Spitfire fiercely gazed right into her eyes-- she wasn't messing around anymore. "Yeah there's only a few minutes left 'til eight, but that's more than enough for me to make your bladder give up all that freaking piss." With that, Spitfire placed the bucket right in-between Rainbow's legs, and she breathed in deeply as Spitfire pinned her against the wall. Rainbow already felt like she was about to pee-- anything Spitfire tried would offer immediate results-- and all Rainbow could do was watch and try her best to cling by the smallest of threads as the vibrant orange mare reached down and zipped her jacket all the way down. She didn't take it off though, simply leaving it hanging to its sides as her breasts visibly rested from in-between the two sides of her jacket. With that, she lowered her hand, rubbing it across Rainbow's prized bladder.

"I'm not peeing Spitfire." Rainbow shakily spoke, causing the mentioned pegasus to chuckle in response.

"A fighter until the end, huh?" Spitfire felt Rainbow's body tense and tremble as her fingers touched and caressed the over-filled organ, teasing her and making her stomp her feet on the floor. "I would like to spend more time admiring this huge thing, but I can't let you reach eight o'clock." Both her hands slowly rubbed across Rainbow's thighs, down to her knees, and Rainbow gulped as she looked on in anticipation. Her heart was pounding in her chest, and she knew what was about to happen. With both of Spitfire's hands on either of Dash's knees, and the bucket placed so conveniently right in-between them... Spitfire probably thought she was so in control and about to win. All of Rainbow's struggles were about to finally pay off though, and she tried not to smirk as she looked down towards her vulva. "Say goodbye to all your pee." Spitfire exclaimed, and with that, she forced apart Rainbow's legs.

Rainbow Dash winced and trembled as she felt her pee so suddenly break through her hold-- squeezing her urethral sphincter her absolute hardest probably would've have even slowed down the stream, let alone stop it. Her legs were spread so far, leaving her pussy all alone and by itself... but also in the spotlight. Having known Spitfire was about to spread her legs, Rainbow took the time to press the tense and precious outer-lips of her vulva together right before she had done so. Now on her last resort, Rainbow clenched her fists and gazed downwards, holding it all in with the lips of her pussy. They swelled outwards slightly just from the pressure of such an overwhelmingly full bladder, making them look so much more pronounced than they already were, but yet they still held strong-- and Rainbow couldn't be more ecstatic. Spitfire merely stared for the first few seconds, before looking absolutely bewildered when Rainbow still didn't start peeing.

"What was that, Spitfire?" Rainbow spoke, her natural confidence and show-offy personality coming through again as she held it all in with her pussy lips right in-front of Spitfire's face. "My bladder isn't going anywhere-- it's under my command, and I'm telling it not to let a single drop come out right now."

Spitfire was in total disbelief over what she was seeing, and for the moment her lustful attitude went away, replaced by total shock and confusion. "Okay seriously, I... what?" She didn't seem to know what to say. "How..? But you... You're supposed to be peeing! How are you holding all of that in??" She spread Rainbow's legs even further apart, but that wouldn't do anything to damper the hold she had on her folds.

"Hey, I told you I was going to win." Rainbow grinned as she stretched her arms up behind her head, arching her back and stretching as she let her pussy get only inches away from Spitfire's face. She was just showing off now, and she yawned, stepping around both the bucket and Spitfire. All the training suddenly became more worth it than she could possibly imagine as she walked towards her clothes, feeling so unstoppable around Spitfire. Truth to be told though, her hold on her vulva's plump lips was already exhausting, but she didn't dare want to show any signs of desperation-- not at this climatic moment.

Spitfire meanwhile remained speechless, just watching as if she was waiting for her to start peeing any second. Rainbow's special control over her bladder wasn't letting that happen though, and she hummed out softly as she bent down to pick up her black V-line shirt. She pulled it on over her head, then proceeded with her blue skirt, sliding it up her legs and as loosely over her hips as she could get them. She could even feel just how puffy her vulva was against the fabric, and she trembled ever-so-slightly as she made her way over to the door. Her outer-lips were really trying to hold that ocean of pee in, but she could already feel her swelled out vulva start to quiver. She probably couldn't even last another minute like this, maybe not even half a minute, but she was determined to hold on for as long as she physically could. Much to her relief, the clock in the room showed that it was eight-- it was actually a couple minutes past eight.

"Well, it's eight'o clock." Rainbow spoke as she smirked at Spitfire. "See you next time." Rainbow was loving every bit of the unbelieving expression that Spitfire still had, and she opened the door, stepping right outside her office with her bladder still in-tact. She had made it, and she felt more happy and pumped than she ever had before. She had proved herself right in-front of Spitfire! Her relief would only be short-lived though, as she was still right in the middle of the cloud factory, and the hold on her plump outer-lips was already starting to quiver enough for pee to start leaking-- she could feel the warm wetness...

This was bad.