Mah Sister Just Can't Get Offa Mah Dick!
It was a hot summer day at the Apple Achers. Big Macintosh was finishing his job for the day, having bucked just enough apples for the upcoming apple cider season. Swiping the sweat off his forehead under the scorching Sun, Big Mac managed to push the one last basket of apples into the barn and closed the doors behind him.
He sighed in relief and shook himself after the hard work.
"Whew, that's all for today!" Mac thought to himself as he started walking towards home, "Ahm really in for a good shower!"
Entering home and patting happily panting Winona on the head as he walked past her, he looked around for a moment before shrugging.
"Ah guess others haven't come back home yet!" He thought and decided to walk to the bathroom upstairs, feeling a bit happy for the moment of peace and quiet he had gotten. Since nopony was home, he had the whole shower for himself and could use as much of hot water he could.
He entered the bathroom, climbed into the tub and pulled the curtain. He turned the valve to start the water, sighing happily as it started warmly cascading down his body, washing away all of the sweat and grime of the day. The bathroom was starting to fill up with steam as he showered. He closed his eyes and relaxed, enjoying the warm rain coming out from the shower nuzzle. At that moment, he had nothing to worry about.
But it was at that moment when his peace was broken. Not long after getting relaxed in his pleasent shower, Big Mac jolted after he heard a knock on the door.
"Big Mac! Are ya in there!" He heard Applejack's voice coming from behind the door. She must have gotten back home just a moment ago and he hadn't heard her coming upstairs at all. Not turning the shower off, he turned his head towards the voice to answer.
"Eeeyup!" He replied, "Ahm takin' a shower!" Wasn't it obvious that he was using the bathroom at that moment?
"Umm, ok!" AJ shouted back, "But, eh... Could you hurry up a bit? Ah need ta use the toilet!"
"Eee-nnnope!" Big Mac said and rolled his eyes. He had just gotten there and didn't want to leave the shower just because his sister needed to relieve himself. "Can ya hold?"
"Umm... No!" AJ replied nervously and started stepping on the spot, "Ah though I was alone here! Can you just let me in?"
"Hmmmph! Nope!" Big Mac was going to say, but halted on the last second. While he didn't want to let his sister in, he knew she was having an emergency and that mares' bladders worked differently than stallions. This was the only bathroom they had anyway.
He shook his head and replied:
"Sure, come in!"
"Whooh, thanks Big Mac!" Applejack replied and entered the bathroom, "You can't even imagine how much Ah need ta pee!"
"Yeah yeah, ah won't look!" Mac turned his back towards Applejack as she trotted by the toilet next to the bathtub. Immediately after sitting in it, she let out a heavy stream of urine into the bowl, groaning loudly in relief.
"Ooh yeah! Ah held it in fo' hours!" She sighed as she shifted for the better position, grinding her bottom against the seat.
Big Mac didn't say anything, but couldn't help but blush at the noises coming from behind the shower curtain. The pungent smell of his sister's urine filled his nostrils and started to make its wonders. In seconds he started to feel aroused and his cock started to drop down from its hiding spot.
Big Mac was starting to panic. Knowing Applejack could see the silhouette of his erect member, he tried to switch his position to hide it. Despite all his efforts, the obligatory disaster was imminent:
Big Mac slipped and fell outside the shower, pulling the shower curtain with him and smacked right in his sister's lap, his head and nozzle right between her legs!
"Aah shit, Mac! You alright?!" Applejack asked worriedly, as Big Mac felt beyond embarrassed. He opened his eyes and noticed he was staring her sister right in the pussy as she urinated. But instead of pulling away, he was mesmerized by the sight and not able to look away!
"Uh... Eeyup!" He blurted out as the droplets of Applejack's piss watered his nozzle. He felt his cock harden as he kept looking and Applejack was starting to get uncomfortable.
"Ok, stranger danger!" She announced and pushed Big Mac back into the tub, "Ya promised not to look, big-"
She, however, halted right after she saw it: as Big Mac was pushed back into the slippery bathtub, he was rolled on his back, which made his massive stallionhood spring up into the display. Applejack's eyes shot open at the sight of it and her mouth started to water. She was once again reminded why her big brother was called "Big" Macintosh!
"Umm, sorry about that, AJ!" Big Mac grinned in embarrassment and tried to hide his cock, but it was pretty difficult considering his size. Applejack looked away and blushed, and after a brief moment of silence she begun to smile.
"It's nuthin', Big Mac!" She replied, "It was mah fault for bustin' in here when you weren't done!"
Finishing her business, she reached her hoof to grab some toilet paper and wipe herself. She rose up flushing the toilet and turned towards Mac.
"Ah reckon ya need some help with that?" She asked and grinned, pointing at Mac's erection.
"EEE-nnope!" Mac replied, not sure if Applejack was even serious. It wasn't common that family members volunteered helping each others to masturbate!
"Yah sure look tense, Mac!" Applejack smirked and reached her hoof to touch Mac's penis, "Let me with that!
And before Mac could even decline, Applejack had grabbed his member into her hoof and started clopping him with it, making him gasp. He wasn't sure if he was dreaming as the situation was way too absurd to be real.
"Oooh... AJ!" Big Mac let out a shaky moan and relaxed, feeling Applejack's warm and soft frog pumping his junk, grinding it along just the right spots.
Applejack leaned her head down and took her brother's flare into her mouth, giving her a blowjob as she masturbated him. She twirled her tongue around his cockhead, soon licking his precum off his urethra.
It didn't take long for Mac to start squirming and without warining his sister, he shot a torrent of cum into her mouth and throat. Applejack let out a muffled moan for a second as Mac's load filled her mouth, but she managed to swallow it down before it spilled out. She kept swallowing Mac's other loads as well and after a while she pulled her head up to catch Mac's last rope of cum on her cheek, huffing for a while to catch her breath.
"Damn, Bro!" Applejack panted, "You were more pent up than Ah thought!"
"Umm... Yeah... Sorry, Applejack!" Big Mac stammered, but Applejack hushed him.
"It's ok, Big Mac!" She reassured, "Ah enjoyed it as well, you know!"
"Umm...O-ok!" Big Mac replied, looking at his deflating member that slapped down on his belly. He rose up and turned the shower back on to wash his cock, noticing his sister was watching him.
"Umm... You need ta shower too?" He asked in confusion with Applejack nodding.
"Eeyup!" She replied, "Are you done now?"
"Well, Ah need ta take a leak first!" Big Mac said and climbed out of the tub, "Ahm not gonna take long!"
"Sure thing, sugarcube!" Applejack winked at Mac, making him roll his eyes. He straightened himself and pulled the seat up before letting it fly. As Applejack had already seen his cock, he wasn't bothered about the fact that she was staring at it while he went. Deciding to tease her a little, he started waving his member around, making his stream of piss splatter across toilet bowl, some of it splashing on the floor.
"Ya like this, don't cha?" He asked his sister teasingly, making her blush.
"Aah yes..." She replied with a husky voice, "Work on it, Mac!"
"Oh yeah?" He grunted and turned around towards Applejack while going, starting to piss right in front of her.
"Ugh, Mac! That's gross!" Applejack yelped and stepped back as she felt Mac's urine splash on her hooves. Her brother just smirked and kept going, aiming his member down to keep his stream further away from her. Soon his stream slowed down to a trickle and he shook his member before his sister's eyes.
"Atta boy! Shake it hard!" Applejack smirked, feeling her clit poking between her folds. Maybe she could take Mac into her room after this and bang his brains out!
She raised her head up to meet Mac's green eyes as he flushed the toilet.
"So, you wanna take this to the bedroom?" She asked while blushing.
"Eeyup!" Big Mac nodded. They could clean the bathroom later anyway...
"What in tarnation is happenin' here?!!"
They suddenly heard Granny Smith's stern voice behind them. They turned their gaze towards the door in embarrassment as they saw her standing there, looking angrily at her grandfoals. Applejack hadn't locked the door behind her!
"Ah didn't raise no adult foals who keep pissin' on mah floors!!" She scolded them, "Now you two clean this mess up or Ah spank ya!"
Obviously Big Mac didn't dare to do anything else with Applejack for the rest of that day!
-The End-
Author's Note
So this story was written under 2 hours to test my wroting skills. Hopefully it doesn't show too much... 
