Chapter 1: Rainbow’s Accidental Exposure
Twilight was coughing like she was about to hack up a hairball. The room was filled with the smoke of too many colors for her liking, and she couldn’t see a thing. “Dash!” she wheezed. “Rainbow Dash, where are you?”
“Over *cough* here.”
Finally regaining her senses, Twilight lit her horn and created a mild cyclone indoors. The wind was just strong enough to carry the smoke, and maybe a few papers. Once she gathered all of the undesirable air particles, she condensed them down into a space small enough to fit within a box that she had at the ready. Then, she closed the lid on that low-tier disaster, and turned to face the high-tier disaster with blue wings. “Dash, what were you doing?”
“Me? What about,” Rainbow coughed up a puff of rainbow smoke, “you? What the hay was that?”
Twilight tensed as her cheeks tinted. “I was trying to run an… experiment. However, when I was in the middle of an especially delicate procedure, guess who popped in through the window? Seriously, do you just not understand the concept of a door?”
Rainbow rolled her eyes and scoffed. “Puh-lease. Doors are for chumps. Rainbow Dash has places to be and things to do. Which reminds me.” She cleared her throat again. “I’m taking the CMC out on a camping trip in the White Tail Woods. So, if you need me, that’s where I’ll be.”
Twilight blinked. “Just you? Not Rarity and Applejack?”
Rainbow shrugged. “That’s how we initially planned it, but those two got last-minute appointments for… I didn’t really pay attention. The point is that I’m watching the foals tonight.”
Twilight glowered as her wings bristled. “And the reason you couldn’t just leave a message with Spike, is…?”
“Eh. I prefer the direct approach. Anyway, see ya later, Sparks.” Rainbow then zipped out of the room, leaving a rainbow trail in her wake.
“Dammit, Dash,” Twilight grumbled as she began cleaning up the disaster zone that used to be her workstation. “Why do you always have to be so impulsive? This could’ve been bad.”
Then there came a knock at the door. “You decent?”
Twilight snickered. “Come in, Spike.”
He poked his head in. “You didn’t answer my question.”
“When am I not decent?” Then, at his deadpan stare, she amended, “Don’t answer that.”
“I just came to check on the explosion.” Spike walked up to Twilight’s side and surveyed the damage. “Eh, I’ve seen better. Six out of ten.”
“Blame Dash. She’s the one who flew in unannounced right when I was in the middle of my—”
“New porn spell?”
Twilight’s voice caught in her throat. She turned to her drake friend, mouth opening and closing like a dying fish.
Spike smirked smugly. “C’mon, Twi. After all these years of helping with these crazy schemes of yours, did you really think you could hide anything from me? I’m the guy who handles ordering the materials, ya know.”
Twilight’s cheeks burned, and she averted her gaze. “I… had hoped.”
Spike chuckled at this triumph and set a claw comfortingly on her shoulder. “If it makes you feel better, all I could tell was that this was a porn spell. Most of the details were trickier to figure out.”
Aghast, Twilight huffed. “Th-that is a gross oversimplification of a highly—”
“Sixteen herbs renown for being aphrodisiacs,” Spike stated flatly, arms folded to show that he wasn’t taking any of her BS. “Do I need to run through the whole list, or will you save us both the trouble and just spill?”
Twilight’s ears splayed in defeat. “Okay, fine. If you must know, I was experimenting with ways to improve an existing spell that… well, gives mares penises.”
“A futa spell?”
Twilight went bug-eyed. “How do you know that word?”
Spike chuckled again. “Our friends aren’t as sweet and dignified as they let on. It’s a coin toss whether AJ or Rarity is the worst. The things that come out of those mares’ mouths… And don’t even get me started on their sisters. Phew!”
Twilight pursed her lips, wondering to what extent Spike was messing with her. “Anyway, the crudely named futa spell does, well, I suppose you already know, don’t you.”
“Oh, by all means. Spell it out,” Spike said with a shit-eating grin.
“Ugh. I was trying to add an extra layer of allure to the spell matrix. Essentially, I wanted to make it so that partners who were willing yet hesitant would be emboldened to take that first critical step.”
“That’s a really sweet way of saying that you want ponies to be more open to mare cock.”
“Spike!”
“Tell me I’m wrong.”
“I… Grr! There’s just no talking to you, sometimes.”
Spike raised an inquisitive claw. “Question. If Rainbow came in and messed with the experiment halfway through, then…” The rest was implied.
“Oh, please, Spike. This was still in the experimental stage. Obviously, I used inert ingredients to prevent that exact kind of accident from happening. Rainbow and I were both exposed, and I’m feeling just fine. Why, the only way anything could happen is for a strong surge of magic to catalyze the lingering residue of the explosion and—”
*KER-POW*
An explosion of rainbow light shook the Crystal Castle to its foundation. The wave of light rippled outward from some distant point in the early evening sky. Conveniently enough, all of this could be seen from the window, granting the alicorn and drake front-row seats to the energy wave coming right at them and passing harmlessly through their bodies.
With Twilight stunned stupid, Spike decided to fill the silence. “You, uh, want to finish that sentence?”
“No… No, I’m good,” Twilight said, already starting to feel a peculiar tingle between her hind legs.
***
Rainbow was enjoying the thrill that came with pulling off a Sonic-Rainboom. It was like the usual adrenaline rush of an awesome workout, only bolstered with alicorn magic. Really, nothing could compare. That being said, the sensation was often amplified by the cheering of her adoring fans. In this case, she was pulling the CMC in a flying chariot. She’d bought it to transport ponies for some extra cash, but it was also convenient for carrying luggage and friends to places where the trains couldn’t reach.
“You guys doin’ alright back there?”
“Whoa!” the three girls cheered together.
“That was awesome!”
“Wow, Ah’ve never gone so fast before in mah life!”
Sweetie snickered and pointed at Scootaloo. “Y-your mane.”
“What about it?”
Sweetie reached out and batted at the end of the orange filly’s slicked-back hairdo, prompting Scootaloo to do the same. “Is it gonna stay like that?”
“I kinda hope so,” giggled Scootaloo.
“Hey, Rainbow. Do that again. Ah wanna get that do, too.”
“Sorry, girls. Rainboom really takes it out of me. I’m kind of a minute-mare like that,” she explained to the chortling fillies. “Tell ya what, though. I’ll do it again on the way back, so be ready.” That got another round of cheers from her adoring fans, warming the speedster’s heart. Checking on their location, they’d overshot their original destination, but that wasn’t an issue. She was familiar enough with the area to pick out plenty of alternate camping sites. Granted, this would make it trickier for Twilight to find them, but she was sure that everything would work out in the end. It always did.
Rainbow descended with her chariot to a prime piece of real estate. Near enough to water without the ground being too wet, safe berry bushes for eating, nowhere near any predators, and a rocking view of sunup for tomorrow. The next few hours were spent pitching the tent, preparing the water, starting a fire, and everything else that went into setting up camp.
“Guys, have you ever noticed just how awesome Rainbow is?” gushed Scootaloo like the fangirl she was.
“Don’t see how Ah would. Ya only said it, like, ten times today.”
“Eight,” Sweetie corrected. “Saying it three times in the same breath counts as one.”
“No, it doesn’t.”
“Yes, it does. We’re not counting the words, just the times she makes the statement. That’s eight,” asserted Sweetie haughtily.
Then Bloom got a devious look in her eye. “Ah know. We can ask Rainbow ta settle this.”
Sweetie mirrored Bloom’s expression. “Good idea.”
Scootaloo ran to position herself between her friends and idol. “Guys, no! And I’m being serious. Rainbow is more than just awesome. Everything she does is cool, she’s fun to be around, and…” She trailed off while drawing circles in the dirt.
Sweetie rolled her eyes. “Normally, this would be the part where I tell you two to get a room. However, we only brought the one tent, so keep your tail down until tomorrow, alright.”
Bloom snickered. “That’s a tough order. Ya think she’ll be able ta pull it off?”
“Pull it off, out, or tie it in a knot,” Sweetie listed. “So long as I don’t have to look at it, I’m fine.”
Bloom covered a hoof over her mouth and whispered like Sweetie couldn’t hear. “She’s lyin’. Ah know fer a fact she likes ta-gah!” Unfortunately, the farmer’s big secret was cut short by a tackle from the tiny marshmallow.
Rainbow was far enough away that she could only hear every other word, but the general sentiment made her smirk proudly. That smirk twisted into something less controlled as she sat half-submerged in the stream. She’d started to feel a little warm and decided to take a dip to cool off. When that didn’t work, her hoof had somehow found its way between her legs. Why? Why was she suddenly so horny? Granted, the Sonic Rainboom often left her wings stiff for a while, but this time felt different.
The mare’s clit ached something awful as it begged for attention. She did her best to appease it, rubbing her hoof in little circles and alternating the levels of pressure. It felt good, but inadequate. So she brought another hoof down to tease her teats. Her nipples were painfully erect, and it thrilled her to compress them. As her eyes closed, her imagination painted a picture of somepony using their mouth to eat her out. That seemed like what she really needed right now. Mare or stallion, she wasn’t picky. Unfortunately, they were miles away from civilization and her fellow ponies. Where would she-?
“Uh, Rainbow?”
Startled, Rainbow snapped to attention, compromising her position and almost fully submerging into the water. Then, pulling herself out and coughing up the bit of stream she’d swallowed, she looked at the one who’d caught her with her hoof in the cookie jar, so to speak. “H-hey, Scoots. W-what’s shakin’?”
“What were you doing just now?”
Rainbow’s eyes darted around as if in search of the answer. “I was, uh, just chillaxing. You know me, heh-heh. Play fast and rest faster.” She made a mental note to slap herself later for such awful words.
Scootaloo perked up. “Oh, that’s cool. Mind if I join you?”
Rainbow’s cheeks reddened as she went bug-eyed. “Uh, maybe some other time. Was, uh, there anything you needed?”
Scootaloo’s eyes widened as if seeing Rainbow for the first time. The blue speedster only performed minimal self-grooming and was almost never in what one might call a pristine condition, but that was part of her charm. She was too cool for prissy stuff like that. However, something about seeing her in this drenched state was doing something for the orange pegasus. Rainbow’s drenched fur had turned a few shades darker, and there was a peculiar appeal to her dripping mane. It evoked images of mutual preening, something pegasi did for purely hygienic reasons, but was a popular setup in erotic literature.
No! Scootaloo screamed in her head. Get your head out of the gutter, girl. Rainbow isn’t into you like that. She bit her bottom lip in the hopes of using the pain to quell her fantasies.
Now that she’d recovered from the initial shock, Rainbow took a long and appraising look at the filly. Of course, she wasn’t a filly anymore. Besides her cutie mark, which most considered as a marker for adulthood, her body was starting to develop nicely. She was eating enough to fill out in all the right places while discarding any lingering baby fat. She still had her filly cuteness, however.
And that mouth… Scootaloo biting her lip drew Rainbow’s attention to her mouth. It seemed perfectly suitable for her earlier fantasies. It was a good size with lips, a tongue, and maybe some teeth, if the speedster was feeling adventurous. She probably didn’t have much in the way of experience, but Scootaloo was her biggest fan. She’d be willing to learn, even eager. Rainbow wasn’t much of a teacher, but she knew how to be a loyal and supportive friend. All Scootaloo would need is a little encouragement and patience as they worked together to… Rainbow pinched her foreleg and gave it a rough twist for maximum pain. This was not an acceptable train of thought.
Realizing that the silence had gone on for too long, Scootaloo decided to finally answer. So, what were they talking about, anyway? Oh, right. “I was just, ya know, wanting to hang out.”
Rainbow smiled kindly. “You girls finish gathering the extra firewood and berries?”
“Sure did. The pot’s boiling, and Apple Bloom should be prepping the soup as we speak.”
Rainbow swaggered over to the filly from the stream, still dripping as she playfully messed Scootaloo’s mane. “Then hanging out’s about all there is to do, squirt.” Rainbow was mindful of Scootaloo leaning into her touch and making a sound that was almost a purr. This was typical. Scootaloo looked up to the rising star that was Rainbow Dash and would do anything for her approval. However, it only just now occurred to her that ‘anything’ meant, well, anything. Rainbow’s eyes drifted down the filly’s back to her pert little rump. It was still very much a filly’s rump where the last of her baby fat was stored. How soft was it? If Rainbow was going to teach her student how to use her mouth, it only made sense that a demonstration would be in order, right? Wrong!
Despite facing one another, Scootaloo noticed the odd way that Rainbow’s tail was flicking. Mares only flicked their tails like that when they were fighting to keep from flagging. Was Rainbow aroused? Did her fan accidentally stumble on her in the middle of…? Scootaloo suffered a brief mental blue screen and needed to reboot. If that had happened, then Rainbow was probably very agitated for being interrupted. That was wrong. The right thing would be for the wrong-doer to… No! She’s not even into fillies… as far as you know. Wait…
“Uh, Rainbow.”
“Yeah, squirt.” Rainbow noticed how her muscles tensed and her breathing became more labored, almost like she was anxious to hear what the filly had to say.
“This might sound weird, but…” Asking if her idol had ever had a boyfriend would be unbearably embarrassing, so she sought an alternative. “Are the Wonderbolt showers like what the rumors say?”
Rainbow snickered. “Curious, are we?” she asked as an image flashed in her mind of her young fan joining her for a scrub.
“Uh, kinda. Like, is it really what they say where it’s, ya know, an all-you-can-grope buffet?” Scootaloo very much wanted to throw herself in the stream and drift along somewhere she’d never be found again.
“Eh, it depends. Like, if there’s been an especially grueling workout where it hurts to breathe afterward, nah. No pony’s in the mood for nothing. However, if it’s something more mild and ponies got some extra energy to burn off…” Rainbow grinned lasciviously and made a crude gesture with her hoof.
Scootaloo gulped audibly. “A-and you?”
“What about me?”
“Like, who do you prefer for… ya know?” Scootaloo inhaled deeply through her nose. Something stank, so she smelled it again.
A part of Rainbow felt like she should put a stopper in this conversation, given how funny it was making her feel. However, another part of her happened to like this feeling and was curious where it might go. “I’m kinda up for whoever. Mare or stallion. Whoever tickles my fancy.” Seeing Scootaloo lick her lips gave Rainbow the peculiar sensation of a weight being added under her belly, like her teats had swollen or something. “Usually, it’s whoever makes the first move,” she said in a husky purr.
“R-really?” chirped Scootaloo. “I, uh, kinda expected y-you to be the f-first.”
Rainbow lowered her head until she was at eye-level with Scootaloo. It was exciting to see just how infatuated the young mare was with her. Her breath smelled like wild berries. “Don’t go spreading this around, but when it comes to that, I’m a bit of a switch. I like chasing, but I don’t mind being the chased.” She snickered. “Course, I don’t make it easy. Pony’s gotta show that they can handle aaall this”—she gestured down her frame—“before they get any. Gotta catch me, if ya know what I’m sayin’.”
Scootaloo took a step forwards. “No, but I want to.”
Rainbow found herself feeling oddly light-headed. Was there something in the air? Whatever it was, it was intoxicating and left her knees weak. The sensation passed as quickly as it came, and she straightened up. “Uh, I think we should head back for camp,” she declared with more lucid authority and led the way.
Scootaloo also snapped out of whatever headspace she’d just been in and hurried after the speedster. However, rather than catching up, she chose to trail just behind to get an eyeful of Rainbow’s behind. The blue mare’s blue rump looked strong. It wasn’t the sort of pillowy rump to rest your head on, but it probably felt just as good to hug. She stared at those blue cheeks and the swaying rainbow tail with single-minded intensity. A treasure was hidden behind those hues, and right now, nothing was more important than catching a glimpse. Rainbow must not have been looking where she was going, because she stumbled, and her tail flicked out of the way. Scootaloo beheld everything that her little filly heart craved to see… and then some.
There was hardly any time to ogle the coveted treasure beneath the tail before her vision was stolen by something further south. It’s not like Scootaloo had never seen under other ponies’ tails before. Ponies rarely wore clothes, and accidental exposures were a common occurrence. The polite thing was to pretend to see nothing while secretly savoring the sights. Scootaloo had seen fillies, colts, stallions, and mares galore. Each followed a set formula of how parts were arranged while still being unique. However, she’d never seen that before. And before she knew what was happening, she reached out to touch it.
“Yipe!” Rainbow yelped as she jumped ten feet in the air. Something had touched somewhere very sensitive, yet things didn’t quite line up in her head. Still in the air, she glanced down to find Scootaloo looking mortified. So, the older pegasus gave her a friendly grin. The young mare was just curious. Admittedly, given some of the things she’d said, Rainbow reasoned that she was partially at fault for sending the filly mixed messages. However, as she prepared to apologize and talk things out like rational ponies, she flapped her wings, and something hit her thigh. When Rainbow looked down, her wings stiffened in shock. The mare plummeted to the ground, luckily landing on her back on some soft moss. “Ow…”
“Rainbow!” Alarmed, Scootaloo ran up to check on her hero. She’d seen Rainbow walk away from worse crashes, yet she still worried. However, as she neared, she noticed that peculiar scent from earlier. Her eyes fell on the mare’s new appendage, which stood up straight as the mare lay back. Scootaloo knew the word for it, yet it still eluded her. It was big, though. Big and cylindrical, like a grand spire. It was a darker shade of blue than Rainbow’s fur and covered in veins and bumps that enticed the filly’s eyes. The most intriguing part was the spire’s tip. It was broad and flat, yet still round and smooth. Scootaloo licked her dry lips as its scent tickled her nostrils. She took a step closer, and felt heat radiate off the base. This drew her attention down to the large, heavy-looking orbs that hung over Rainbow’s groin and covered her mare bits.
When Rainbow’s head stopped spinning, she looked up and beheld the same sight that shocked her wings stiff and now entranced the filly. It wasn’t the biggest horse cock Rainbow had ever seen, not by a long shot. However, the pillar of meat still looked massive as it grew out from her groin. The cool air stung the sensitive flesh, making her aware of a weird pulsing. Finally, it clicked in the mare’s mind that not only did she have a penis, but she had an erection.
A gust of hot air blasted the cock’s base, drawing Rainbow’s attention to the filly. Scootaloo looked hypnotized, like a foal staring with longing at a sugary treat. When the filly licked her lips, Rainbow’s pulse spiked. There was no denying the hunger in Scootaloo’s eyes. Whatever her experience, the filly craved what she saw. And as hot breath continued battering her sensitive bits, Rainbow had an increasingly difficult time reasoning why they shouldn’t.
“R-Rainbow?” Scootaloo whispered.
“Yeah, squirt.”
“D-do you have a…?”
“I think so,” Rainbow plainly replied.
Scootaloo swallowed. “It, uh, is it supposed to be th-that big?”
“I mean, I guess,” Rainbow hesitantly allowed, having no idea what was happening. Instead, her mind continued fogging over with desires that made her new tool twitch. “Ngh!” she grunted.
“Oh, is it painful?” Without thinking, Scootaloo reached out and touched the spire. It was hot against her frog, but the blue mare’s hiss made her jump back. “Sorry, did that hurt?”
“I… no,” Rainbow exhaled. “It, uh, felt kinda nice.”
“It did?” Scootaloo looked between her idol’s face and her new equipment. “Sh-should I… ya know…?”
Rainbow sat up, bringing her cock forward to lightly bop the filly on the nose. It was cute the way Scootaloo’s eyes crossed. Then, as if she were moving on muscle memory, Rainbow pushed her cock forward to boop the filly again. She laughed at the returning cuteness. Then, licking her lips, the speedster said, “You ever seen one up close?”
“Well, not exactly,” Scootaloo admitted. Her breathing grew even heavier as she gorged herself on the spire’s scent. It made her little filly flower grow hot as she began rubbing her thighs together. “B-but I want to,” she said without thinking.
A predatory grin spread over Rainbow’s lips as the last of her common sense was swallowed up by foreign desires, and a plan formed. “Don’t play games with me. I know you want to, squirt. Cuz I want to, too.” Again, she pushed her cock to boop the filly.
“Y-you want to… that w-with m-me?” Scootaloo asked while pointing at the spire. The meat tower looked large and intimidating, and the look in Rainbow’s eyes triggered the filly’s prey instincts to flee. Yet despite this, the filly heard herself say, “Okay.”
Rainbow bit her bottom lip as she straightened up while still sitting. She then grabbed the back of Scootaloo’s head and gently brought her forward until she was eye-to-eye with her one-eyed snake. Despite having no experience screwing around from this end, Rainbow still found her actions feeling oddly natural, like she’d been doing this for years. “Open wide,” she gently commanded.
Scootaloo obeyed without question and offered no resistance as Rainbow pushed her mouth onto the spire’s tip. It somehow felt even hotter as the filly moaned. She had to stretch her jaw a little to engulf the whole thing, yet she felt driven to do so. It felt good. The hot meat filled her mouth as her tongue savored every inch in reach. It was like nothing she’d ever tasted. Sweet, salty, or a little meaty? None of these seemed fit. However, another inhale through her nose finally put things in perspective. This flavor, this musk. They could only be Rainbow Dash. Somehow, this realization just made the filly even hotter as she tried to pull more of the spire into her mouth.
“Whoa, not bad, squirt,” Rainbow praised. She no longer needed her hoof on the filly’s head. Scootaloo was doing just fine, pushing down on her own. “Bob your head up and down. Yeah, that’s it,” she coached. Scootaloo was a good student and complied. However, she was clearly distracted. A glance at the filly’s wiggling hips told Rainbow all she needed to know. “Hey, no playing with yourself,” she chided.
Scootaloo tensed when she felt the larger mare grab her rump and turn her around as Rainbow leaned back. The filly became intensely aware of her flower’s proximity to her idol’s face. Rainbow’s breath was hot against the filly’s nether region. It made her little pussy wink, which was the most embarrassing thing ever, even more embarrassing than those times she winked at her aunts. She could practically feel Rainbow’s judgmental eyes on her slit, and possibly her anus. Were they not up to the speedster’s standards? Was she clean down there? Would Rainbow be so disgusted with her unkempt flower that she’d abandon her biggest fan, forcing her to go into exile and hit the tracks as a roaming desperado? Was it a bad idea to read so much of Sweetie’s weird fanfictions about the mane six? That last one was probably a yes.
“For me? You shouldn’t have.” Rainbow licked her lips before planting them on Scootaloo’s cunny. She moaned in delight as she passionately kissed the filly’s lower lips. They oozed with liquid arousal, filling Rainbow with a sense of triumph as she kneaded them apart with her lips and slipped her tongue inside. Scootaloo’s inner walls were sweet, and her taint reeked of youthful innocence. This was a pure and innocent filly who’d yet to be deflowered. ‘Was’ being the keyword here.
Scootaloo moaned around her mouthful as she felt Rainbow’s skilled tongue bore into her sex. Unlike the filly’s tongue, Rainbow was an expert in eating pie. The oral appendage precisely located all of the filly’s sensitive spots, including several she never knew existed. Scootaloo’s mind went hazy with pleasure as her body went on without her. Her mouth fell further on the shaft, with her barely noticing as the tip poked her uvula. Then she went a little further, and finally gagged.
Snapping out of her daze as Scootaloo tensed and groaned in pain, Rainbow immediately ceased devouring the filly’s cunny and began pulling her off. Scootaloo moaned in protest, but Rainbow ignored her. Not soon enough, she’d extracted her cock from the smaller pegasus’ gullet and set her on the ground to hack her throat clear. Rainbow stood beside Scootaloo and gently stroked her little friend between her undersized wings. “Huh, so that’s what it’s like from this end,” she mused.
“Huh?” Scootaloo groaned as she cleared her airway, fearful of some terrible rebuke for her failure.
“Ya got over eager, squirt. Bit off more than you could chew. Literally,” Rainbow snickered. “I can’t tell ya how many times I’ve done that. I see a dick I like, and I just want to take it all. But, sad to say, this is pretty much the one area where the great Rainbow Dash has yet to push past her limits. It’s just funny seeing things from this angle, ya know.”
Scootaloo finally calmed under Rainbow’s gentle touch and words. She hadn’t failed in her idol’s eyes. This thought reinvigorated the filly’s spirit and caused her lustful longing to return in full. “I-I want to do it again,” she needfully stated. “I want to make you feel good.”
Scootaloo’s words also resurrect Rainbow’s lust. The mare’s hungry eyes started at the filly’s cute face, trailed down her slim body, and finally stopped at the curve of her flanks. “I want you too, squirt. Your little sex was so juicy and delicious. I know you can take me.” She turned her body slightly sideways and indicated her still-erect cock. “You up for it?”
“Buck, yes,” Scootaloo said in muted rapture as her body turned around. The filly was now partially convinced this was a dream. Where else could she hear her beloved idol say such amazing words? It actually made perfect sense. The little pegasus had gone to bed after reading one of Sweetie’s more erotic stories, and it was now influencing her dream. If that was the case, she hoped that she wouldn’t wake up before the good part.
Rainbow watched the filly turn around, bend over, and flag her tail in the universal signal of horny mares who needed their pussies filled. “Damn, that’s sexy,” Rainbow hotly exhaled as she returned her nose to sniffing between the filly’s cheeks. The air was warm, and the musk was even more intense than before as she observed the leaking slit. “You’re so wet. Just how badly do you want this dick?” she asked as her cock ached with desire.
“More than anything,” Scootaloo whined. “I want it inside me. Make me yours, Rainbow Dash. Give me your cock, and I’ll do whatever you want.”
“Heh, I like a mare who knows what she wants.” Rainbow confidently smirked as she stepped forward. Scootaloo wasn’t big enough for Rainbow to risk putting her hooves on the filly’s rump as stallions usually did when mounting. Instead, she sucked in her barrel to walk over the filly. Scootaloo’s little wings tickled her underside as her cockhead tapped against something warm, soft, and wet.
“Sweet Celestia, give it to me!” Scootaloo whined.
“He-he, you got it.” Rainbow took another step forward as her cock miraculously aligned with the filly’s slit. It was tight and resisted after the first half-inch. “Relax, kiddo. I can’t get it in if you’re all—Whoa!” Rainbow gasped as the resistance suddenly disappeared, and she slipped in several inches at once. “Hey, not bad. You doing alright down there?” she asked with a proud grin.
Scootaloo urgently nodded. “S-so big!” she grunted as the thick tool stretched her insides. She’d relaxed at Rainbow’s instruction, needing the cock up her twat, but this was unlike anything she’d ever experienced. Of all the times she’d masturbated to the speedster after ‘borrowing’ her aunts’ tongue-like toys, nothing compared to the burning piece of meat filling her now. “Th-that’s more than any—NGH—buck!”
“Hey, you’re doing awesome, squirt,” Rainbow encouraged. She wanted to start ramming the filly full of her new stallionhood, but she resisted. Instead, she encouragingly rubbed her hoof between the filly’s ears. “Just relax, and I’ll do all the work. I’ll make you my slut before you know it,” she said without thinking.
Scootaloo whined in need and gave a squeak that almost sounded like ‘more.’
“That’s my girl,” Rainbow encouraged as she more carefully stepped forward. She had no frame of reference, yet she still believed the filly’s little flower was absolutely amazing. It was so warm, wet, and inviting. Progress was still slow to avoid hurting the little tyke, but Rainbow’s head was still awash with lewd bliss at taking such a young filly. It was just so lewd, but the filly’s deep panting and longing eyes said that she was just as into it, if not more so.
Scootaloo could barely think. Every second that passed saw another inch of cock meat sink into her filly hole. Her opening stretched tightly around its guest, which got easier with time. It seemed like her body was finally getting the message that this was just destiny being fulfilled. Scootaloo was submitting to Rainbow Dash, utterly and fully. And then, at the same time, the larger mare’s waist tapped the filly’s butt, and the cock reached her cervix. Scootaloo fell forward and screamed into the ground.
“Yeah, that’s my good girl,” Rainbow praised. She slightly rolled her hips, giving her lover time to recover, but also helping to relax her vaginal muscles to make this next part easier. “You’re such a good slut. I’m going to start moving now, and good sluts are always mindful of saying if things are getting too rough, got it?”
Panting with her tongue hanging out, Scootaloo turned to stare at her big-dicked lover out the corner of her eye, and managed to nod.
“That’s what I like to hear. This is your first time with the real thing, so I’ll start slow, kay?” Rainbow didn’t wait for an answer as she slowly withdrew. Her eyes rolled to the back of her head as her cock slid along the filly’s tight walls. Entering had been great, but the quicker pace resulted in amplified friction that was utterly amazing. “Shit, is this what it’s like having sex like a dude? What the buck have I been missing?” Rainbow asked the empty clearing and began to laugh.
“Y-you,” Scootaloo grunted back. “O-only you.”
When Rainbow was halfway out, she looked at the filly, and asked, “What’s that? You only want my dick filling your foal hole? Is that what you’re saying, slut?”
Scootaloo nodded, barely noticing how Rainbow’s breathing grew more ragged as her eyes became intense and beastly.
“Yeah, that’s right,” Rainbow huffed as she slipped back inside, much faster than before. “You’re mine, you little bitch. Your pussy belongs to me and no pony else. Got that?”
“Y-yours!” Scootaloo cried out in bliss. “I-I’m yours!”
“Damn right.” Rainbow began thrusting in earnest. Fast and increasingly rough pushes inside, followed by slightly slower withdraws. Her dick churned the filly’s tight insides, creating the most beautiful wet smacks to compliment the youth’s moans. She pushed her hoof between the filly’s wings to hold her down as her ass stayed high in the air. In Rainbow’s mind, this was right. This was where Scootaloo belonged, and the rightness just aroused her even more. “I’m gonna buck you, bitch. I’m gonna make you my cock sleeve, and you’re gonna love every minute of it!”
“Y-yes!” Scootaloo weakly cheered. Each thrust sent tremors through her young body. Her pulse pounded in her ears, but not as loud as the wet smacks from the bucking. Everything about this moment was better than her wildest dreams, and she loved it. She even loved what Rainbow said about being a cock sleeve. Being the speedster’s live-in girlfriend and sex toy had always been her biggest fantasy, right behind getting her cutie mark. And now, it looked like both of her dreams had come true.
When Rainbow felt her balls tighten, her brain somehow recognized the alien sensation of pressure building in her cock. “I’m close, squirt,” she grunted. “I’m gonna make you my mare. You ready?”
“F-fill me!” Scootaloo cried out. “Fill me with your seed! I w-want to be y-yours!”
“Silly bitch. You already are.” Rainbow hilted one last time within the filly. Her cock erupted with seed. It was like peeing, only a million times better. Rope after rope erupted into the filly’s hungry hole. There was so much that some even squirted out where their sexes met. As Rainbow rode out her orgasm, she experienced the happy bonus of cumming from her pussy as sex juices poured down her thighs. It was icky and sticky, but she loved it.
Scootaloo had left the building. Her eyes rolled to the back of her head, and her mouth hung open in a silent scream. Her brain had gone white-hot with pleasure, unable to process the outside world. Without question, this was the single greatest moment of her life. She felt like she could die happy. Except that’s when she felt a familiar pair of lips kiss her cheek. Scootaloo blinked back to consciousness and stared into the loving eyes of her idol. “R-Rainbow… Dash?” she weakly asked.
“In the flesh,” Rainbow boasted, giving her hips a slight twist to stir the filly’s insides and make her squeak. “So, was it good?” she rhetorically asked.
Scootaloo suffered a momentary mental crash. Rainbow’s question was downright absurd, even offensive. To even ask such a thing implied that sex with the greatest pegasus in the world could be anything less than perfect. It just didn’t add up. Luckily, before the filly’s brain went bye-bye again, the mare tapped her cheek.
“Hey, stay with me, squirt. I know death by snu-snu sounds awesome, but just think of all you’d miss out on.” Rainbow laughed and added, “Just wait ‘til we get back to my place and do it on a real bed.”
As if by magic, Scootaloo sprang back to full consciousness. She was lucid and alert, although the dick in her fillyhood still took up most of her attention. The filly looked over her shoulder at where her butt met Rainbow’s groin and gave her rump an experimental flex. “Nnngh! Yeah, it’s in there,” she stated with a giggle.
“Sure is. We’re out camping, and my cock’s found the perfect sleeping bag.” Then, Rainbow sat down and carefully wrapped her arms around Scootaloo’s barrel, pulling the smaller pony against her chest to sit in her lap. With a confident smirk, she asked, “That okay with you?”
“A-always,” Scootaloo purred as she lovingly nuzzled under Rainbow’s chin. It was how her fantasies often ended, with the two wordlessly showing their love after indulging in awesome sex. All that was left was happy matrimony, and everything would be perfect.