Never Cross the Streams
"BUUURRAP!" Applejack let out a solid belch of satisfaction after downing yet another mug of cider. It was a tremendous relief to the built-up pressure. Just as everything working out for the Apple family reunion. She had been under so much pressure to try to make it the best she possibly could. But things kept going wrong. Luckily everything worked out in the end as they all worked together to raise the razed barn to song.
Apple Cobbler was regaling her with tales from her visit to Braeburn in Appaloosa. Applejack kept trying to get away, but she sure was a chatterbox. "... and let me tell you," Cobbler continued, "Those horse drawn, horse drawn carriages sure were something. I mean, I've seen some work by the unicorn artists I've met, but I tell ya, I've never seen such quality work done by earth pony folk." Applejack listened intently. She'd need another mug full for this.
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On the opposite side of the barn, Big Macintosh sat around the latest cider barrel with his kin as well. The group of stallions was much less lively than the constant chatter of the mostly-mare crowd out front. Each with a mug in hoof, most were content to just sit and enjoy the quiet down time away from the manual labor of their respective occupations.
Big Mac poured from the tap on the barrel for a refill for Red Delicious, who was clearly drinking in competition with his brother Golden. Braeburn was about half done with his. Caramel was already rolling out the next barrel for the group for when this one ran out.
"So I tell ya, that visit to Fillydelphia was a mistake." Braeburn said, taking another swig. "I kept getting hit on by all these stallions there. It was like everypony was gay for me. City of brotherly love indeed."
"Maybe they mistook your pretty pony flank for a mare's." Caramel joked as he set the barrel down. The others in the circle snickered.
"HEY!" Braeburn snorted. "Let me tell ya. It wasn't my flank. It was them ponies in Fillydelphia! I never had that problem in AAAA-" Braeburn was abruptly cut off by Big Mac's hoof being shoved in his mouth.
"I swear to Celestia, if you say Appaloosa like that again in my presence, ah-m a gonna kick yer teeth in." It was the most Mac had said all evening. In his defense, Braeburn could be a bit annoying at times. But more likely, it was the fact that Mac was the only pony in the circle that hadn't gone to visit the 'used cider station' in the farm house. But he was a firm believer in not breaking the seal.
As he sat, drinking his cider, he watched the others around him come and go, proving his theory that once you went, you'd have to keep going more often. He just sat there and held it, confident that he could. But every pony has their limit.
Back around front, Applejack was getting close to her own limit. She, like most mares, would usually utilize the facilities at the drop of a hat. But today she was trying to be a gracious hostess to her other family members. No sooner did Apple Cobbler let her escape did Granny intercept her drag her into another discussion, passing her a new, full mug of cider. Not wanting to be rude, she accepted of course, drinking it steadily as she listened to her next guest. She could make it.
Mac waited with resolve, but he knew if he held it too long he was going to start sprouting wood. It was bad enough to do that while surrounded by other stallions, but also his family no less. He was in no mood to perpetuate any more inbreeding stereotypes about them, nor help Braeburn's theory that 'everypony was gay for him. He casually rose to his hooves and headed inside the farm house.
At the same time, Granny had finished her little conversation. Needing her hooves free, and with no place nearby to put it down, Applejack chugged the rest of the cider and discarded the mug. The carbonation just added to the pressure in her abdomen. She had to nearly cross her legs just to keep from wetting herself right there. It made her trip inside to the bathroom awkward, moving with as much haste as she did.
Once inside the house, Big Mac moved with the urgency he was truly feeling. He had drank so much that he didn't realized just how badly he really needed to go until the very last second. He charged upstairs. He nearly tackled Applejack in the hallway at the top, as she struggled along to try to keep from leaking. The surprise of him nearly colliding with her caused her to gasp, forcing a small trickle down her inner thigh, stopping in her fur just short of her knee. He stopped for just a second. His hesitation was just enough for her to dive to the door at the end of the hall. He was faster, putting his hoof on the door knob before she could reach it.
"Gotta pee." He said simply.
"So do I!" She said, her voice shaking a little as her muscles trembled.
"It's an emergency!"
"It's an emergency!"
They both said in unison. She pushed the door in and cut him off trying to close the door behind her. He got his hoof just inside the door before she could close and lock it.
"Just go outside!" She cried from inside, trying to dislodge him. Certainly the thought had occurred to him. It was how he would have normally resolved the whole 'one bathroom home' issue. But he was at critical mass now, he could feel himself already extending from his sheath. He was seconds away from dousing the floor. He pushed back on the door.
Inside, Applejack had better leverage. If she really wanted to, she could have forced the door closed on him. But it took every ounce of will she had just to keep from pissing all over the floor herself. She didn't have the core strength to resist any longer. She could feel a trickle escaping her. She abandoned the door and made for the toilet. He burst in behind her, slowing only to close the door behind him. She didn't care anymore. She needed to GO, and that was all she could think about as she plopped down landing on the toilet seat to relieve herself.
But no sooner had she sat down then her brother reared up in front of her, his turgid member aiming menacingly at her torso. He braced his hoof against the wall behind the toilet, using his free hoof to push her back on the seat.
"Spread em!" He demanded, using his free hoof to aim himself downward. She was still somewhat in shock. The sound of her stream flowing from her nethers into the water in the toilet bowl under her was too much for him to hold out. He couldn't wait any longer. Before she could react, his own yellow torrent left the tip of his cock. It struck her square in the lap, causing her to to jolt. She reflexively spread her legs to avoid his stream.
Big Mac had been trying his best to respect her modesty in this awkward situation. But he had to look down to watch his aim. He shuffled his hooves and hips a little. Applejack spread her legs apart as far as she could, giving his pee a wide berth. Mac meanwhile was treated to a front row seat of his sister's pussy, and her urine bursting forth. He knew that a kink for such things existed. But the idea of a mare doing it for him never really appealed to him in his mind. But then, he'd never seen it for himself. And the aroma of her urine combined with the rich musk of her pussy was making him excited.
Before he could even notice it, he began to grow harder. It didn't inhibit his flow in the least though. But it did cause his aim to drift ever further north. He didn't notice. He was too mesmerized by his sister's gushing marehood. The sounds of two streams striking the water changed as they crossed with one another, combining into one big stream. A couple seconds later, Applejack felt her brother's pee hitting her again. She had, up until then, kept her eyes squinted shut for both their sake. But she now felt his hot piss hitting her in the crotch. She couldn't understand how his felt so much warmer than her own as it moved across her slit. But it felt like when she was lonely and used the shower extension nozzle, as it began to strike her nub at the front of her marehood.
"HEY!" She barked. Without even thinking, she grabbed a hold of his penis, aiming it downward herself. The sudden contact surprised and excited him even more. There was a hoof on his dick that wasn't his own. Sure, it may have been his sister's but his penis didn't know the difference. It grew stiffer in her hooves, countering her efforts. "Come on! Control yourself!" She said, struggling with it, exacerbating his condition. "Ngh, squat down at least!"
He did as he was told, bending his knees, physically lowering himself so that the tip of his shaft was pointed down underneath her. They were now face to face as they peed together. They both tried and failed to avert from each others' gaze. She kept a hoof on it to hold it in place. But now it was his turn to be peed on as his new position placed his shaft into her steam. He could feel the warmth of her urine hitting his shaft and running down to his tip. But it slowly tapered off as she finished, breathing a sigh of relief.
Without thinking, Applejack pulled her hoof away to get some toilet paper to wipe herself. Free from her grasp, his cock sprung upward, slapping against her sopping wet pussy lips. It's almost over. She reasoned with herself, moving quickly to clean up as fast as she could so they could go back to pretending that this never happened. But the roll in the dispenser was empty.
She groaned and reached behind her to get a new roll off of the tank behind her. But as she did, her hips shifted. His dick shifted upwards into her slit, slipping inside. The shock of the surprise penetration caused her to freeze in place. But it was quickly replaced as she felt her vagina quickly becoming flooded with her brother's urine. And as deep as she was, able to accommodate a stallion's entire shaft, it wasn't bottomless. After only a couple seconds she was filled to the brim and the pressure ejected the intruding member with an audible 'plop', gushing his pent up urine forth back onto him. He backed away in shame, trying to maximize the distance between them, but only serving to strike her clit with his stream again.
"NnnGHH!" Applejack moaned. "No! Keep it under!" She said, pulling him back under her with her hoof to avoid getting wet again. She slid forward over his penis, closing her legs keeping him against her pussy between her strong legs. Making sure to not let go of him this time, she reached behind her to get the toilet paper. He finished peeing at last and struggled to pull away. Applejack, no fool she, made sure to not let go until she was sure he was done. She had no desire to get peed on again.
Each time he tried to pull away she just clenched her legs harder as she worked the paper wrapping off of the new roll. Each time he tried to jerk away, he got a little further. But it also got a little harder. Which is not to say more difficult. She was just about done putting the new roll into the dispenser. He hoped he could escape without another mishap but then...
"Nghn NgGH GAH!" He grunted as his shaft throbbed and his head flared between her legs. She'd tried to work fast enough to avoid it. But he kept rubbing her in just the right way. She felt his shaft throbbing and pulsing against her clit, stimulating her a final time, just enough to send her over the cliff.
"OOhhhooohh." She moaned as he felt himself become wet with mare cum while he continued to ejaculate into the toilet under them. They were both sweating as they just stared into each other's eyes, mortified at what had just happened. Neither of them spoke as she wiped herself clean. She was about to wipe him as well, but he took the tissue and did it himself as his penis now hung limply between her legs.
Suddenly the door flew open with a loud kick. Applebloom ran into the bathroom.
"Oh my stars! You take FOREVER!" She yelled as she ran, jumping up onto the counter and squatting in the bathroom sink as she began to pee. They both looked over at her, as she looked back at them. "What? It was an emergency!"