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A Slumber Party the Pony Way
-by Drace Domino
Under most circumstances, if Princess Twilight was visiting their dimension, it usually meant there was some big, magical threat that came to town and Canterlot High needed saving. That was her typical role, at least, swooping in with safe advice and magical knowledge, advising the girls on just what aspect of friendship they needed to focus on in order to conquer this newest danger. That weekend, though, there was nothing of the sort in town. No strange Equestrian relic causing havoc, no outcast magical creature trying to subvert the will of others, not even so much as a dimensional rift risking the safety of people of both worlds.
That weekend, Princess Twilight was there for a sleepover, and nobody was more excited about it than her human world self.
She’d been talking about it all week, excited to be hosting the princess at her house for a big weekend sleepover with all of the girls. In true Twilight fashion she’d been micromanaging every detail from the movies they’d watch at what times, to the snacks that Pinkie Pie was allowed to provide for minimum sugar rush crashes. The entire week she’d been driving her friends just a bit crazy as she obsessed over the princess’ visit, her natural teacher’s pet mindset crashing hard into the identity crisis that could only come from realizing that your other self was an actual literal princess in another world. She spent hours on the phone asking Sunset questions about Princess Twilight, and begged Rarity to make sure the other Twilight would have the coziest pajamas possible for the weekend, specially tailored to be fit for a queen.
It was clear that she had certain expectations of what Princess Twilight would be like in that social setting, only for the big day to finally come and for Twilight to realize…the other girl really wasn’t that much different from her. The first night of the sleepover, the two ate the same snacks, laughed at the same jokes, watched the same movies and had the same nitpicks about the scenes that weren’t scientifically accurate, and when the time to go to sleep came, they even dozed off in the same position. Left side, legs curled up towards their chest, one hand tucked delicately underneath their pillow. The two were so much alike and had gotten along so well that the princess even mused about the idea of inviting Twilight over to her dimension sometime, expressing particular interest in just how much she was sure the pony versions of her friends and brother would adore her. By the time Twilight Sparkle went to sleep that night, she dozed peacefully and happily, content in the knowledge that despite how very different some parts of their lives were, she and the princess were the same where it counted. They were both the same sort of nerd.
Even if there were certain things that Princess Twilight was…ahead of the curve on.
It was in the middle of the night that Twilight Sparkle woke up, stirred by Pinkie Pie noisily eating a cupcake in her sleep. The girls had all set up downstairs in the living room of Twilight’s parent’s house, stretched out from wall to wall underneath blankets and laying on small mountains of pillows. Naturally, Rarity claimed the couch and was dozing with a sleeping mask and silk sheets she’d brought from home, while Rainbow Dash passed out on Twilight’s dad’s recliner, a hand stuffed down the front of her shorts as if she was possessed by the spirit of a middle-aged man. As Twilight sat upright and blinked away the sleep, her first action was to stretch down a hand to wipe away the icing that Pinkie’s mid-sleep cupcake smeared on the girl's cheeks, and her second was to take stock of her friends. All accounted for, except…
“Princess Twilight…?”
Twilight asked the question softly and quietly, and fumbled in the dark for her glasses. Once she had them secured on her face she scanned the living room once more, only to find that the pile of pillows Twilight went to sleep on were currently empty. Curiously, Twilight’s nose scrunched up and she tapped her bottom lip, musing to herself as she started to stand up.
“Maybe she got hungry in the night?” She immediately fell into the mindset of an overprotective hostess, determined to make sure her special guest was taken care of. “I should go help her out!”
Quietly she padded through the living room, around her friends with deft, soft footsteps. When she peeked into the kitchen, though, there was no princess to be seen, and that remained true for the bathroom, the dining room, and the den! She even peeked back in the living room to see if Princess Twilight snuck back while she was searching for her, only to once more come up empty. And eventually, Twilight had only one other option, turning to the stairs leading up to the second story of her house.
“...wow, she must really be lost.”
Ever the good hostess, Twilight quietly made her way up, eager to find her guest and ensure she had everything she needed. But when she got to the top of the stairs, she finally heard some sign of life in the late night hour, though from the last room she expected. Squeaking, and the muffled sound of voices, from the door at the far end of the hall - Shining Armor’s bedroom.
Twilight adjusted her glasses on her face, her nose scrunching up as she continued to prowl forward. Dressed in cute pajamas with microscopes and test tubes printed on it, she padded barefoot closer and closer to the door, which looked like it was open ever so slightly. There was a dim light from within, presumably from Shining Armor’s desk lamp, and though Twilight couldn’t make out just what was being said, she could definitely pick up the sound of both her brother’s voice and the visiting princess. And upon realizing it, she gave a sharp gasp and picked up the pace. There were so many stories that Shining Armor could tell the princess that would embarrass poor Twilight to the point where she’d never be able to look the other girl in the eye!
“Oh no, oh no oh no oh no…!” Twilight whispered urgently to herself as she scampered to the door, her mind already spinning about the possibilities. Was her brother showing Princess Twilight baby pictures? Was he telling her about the time Twilight got her sleeve caught in her braces?! Maybe he was even sharing a laugh with her about the time Twilight Sparkle thought the Great and Powerful Trixie could use real magic and nearly started a whole new riot at Canterlot High! Panic rushed through her until Twilight stormed into the room, pushing the door open and immediately, stunningly realizing that…Shining Armor wasn’t doing any of those things.
What he was doing was fucking the princess from behind, right on the center of his bed.
***
Twilight Sparkle froze in place, eyes wide and mouth agape as she stared a mere few feet in front of her at what was happening on her brother’s bed. Shining Armor was stripped naked, and the hands of her handsome older brother were holding the hips of the visiting princess as she was braced on her hands and knees, offering herself up for each one of his heavy, thundering thrusts. The sounds of whimpers and moans briefly paused when Twilight entered, but what didn’t stop was the sound of wet contact that came from Shining’s cock plunging deep into the other Twilight’s nethers, banging down to the core before pulling back once more. And though Twilight Sparkle was utterly stunned to speechlessness with the color draining from her cheeks and her knees going weak, the other Twilight had much the same reaction.
“Twilight! Hey there!” She lifted a hand from the mattress to wave at the other girl, offering a bright and friendly smile. “Sorry I didn’t wake you up before coming up here, I was afraid I would’ve woken up everyone and then before you know it, there just isn’t enough room on the bed, and--”
“Uh, remember, Princess.” Shining Armor gently corrected her, though he did so with a not-so-gentle thrust into her pussy. “Things don’t really work like that here.” Afterwards, he looked up with a slightly sheepish expression, and rolled his shoulders as if to suggest he was utterly helpless in the situation. “Hey, Twi. I’m just…uh…learning about the customs they have in Equestria.”
“C-C-Customs?! Equestria?!” Twilight Sparkle suddenly stammered, making a concerted effort to keep her voice low and quiet. It was already hard enough to explain to their parents how there was another girl that looked just like her but she was actually a pony princess, but this would be an even more difficult sell if they woke them up. “Shining Armor, that’s…that’s…she’s your sister! I’m your sister! I…we’re both your sister!”
“You two don’t do this sort of thing?” Twilight Sparkle was staying firmly on task, her hips lunging back again and again, continuing to grind against Shining’s lap. She briefly fondled one of her purple breasts and took a small moment to shiver in excitement, presumably when Shining pounded just the right spot before she continued. “Wow, Twilight, I’m sorry, you should’ve said something. I just noticed how cute Shining Armor is as a human, and couldn’t resist! It’s just sex, after all! What’s the big deal?”
Twilight Sparkle stared at the princess, one eye twitching from behind the lenses of her glasses. She needed some internal time to process it all, and while she did the two on the bed started to change positions. Shining Armor pulled his cock out of Twilight’s pussy and flopped back on his rear on the mattress, while the princess turned around to move her mouth to his prick. She slobbered on his cock for a few sloppy strokes of her mouth before shifting around and facing her back towards him, just as she lowered herself down once more. While Shining Armor’s little sister stared, Princess Twilight eased down on his enormous white dick, taking every last inch into her pussy before spreading her thighs and coaxing him to hold her legs up by the knee. Soon she was bouncing happily up and down, spread eagle in front of Twilight, one arm stretched back to loop around Shining Armor’s shoulders, the other fondling one of her perky purple breasts.
And just in time, Twilight Sparkle snapped back to attention, like her mind had finally bounced right into place once more.
“Princess Twilight, this…this isn’t okay!” She hissed, still desperately trying to keep her voice down. Creeping closer to the edge of the bed, she found herself kneeling on it now, and actively trying to hide the sight of her brother’s surprisingly huge cock disappearing into a pussy that was identical to hers. Her nostrils flared as she couldn’t help but pick up the scent of sweat and arousal, but with a flustered whimper she tried to push down her reaction to it. “I’m glad you’re having fun at my sleepover, I guess, but…humans don’t do this sort of thing so easily!”
Princess Twilight blinked as she rode, and tapped her chin with an outstretched finger. Her expression was inquisitive rather than judgmental, but still…as she spoke, her other self couldn’t help but feel more and more like she was distinctly the less fun of the two Twilight Sparkles known to roam Canterlot High’s halls.
“Really? But Sunset told me things worked just like they do in Equestria, the first time I went down on her.” The princess mused it out. “Oh! And Flash Sentry really didn’t seem to mind when I went down on him in between classes. Or when I let Big Mac fuck my ass while Applejack put apples in my pussy, or when Principal Celestia bent me over her desk and told me she was going to get me pregna--”
“Principal Celestia, too?!” Twilight Sparkle practically squealed in grief at the realizations, falling forward and doubling over to her palms. Nearly hyperventilating, she twitched and whimpered from the combined weight of it all, not to mention the speculation rushing through her mind about just what else this girl was doing with her face. “I…I think I need some fresh air. Or a bag to breathe in. Or…or I just need you to stop riding on my brother for five minutes!”
Shining Armor gave a nervous gulp, clearly hoping that wasn’t the option that Princess Twilight took. Thankfully, that purple pussy remained locked around his cock as the princess kept riding, shifting her weight forward and slipping her legs away from Shining’s grasp. She took over the thrusting by pulling herself up to nearly the point of popping out before sliding back once more, though while she did it she reached out to her other self. Scooping Twilight up and pulling the girl back to her knees, she helped to hold her steady, and even slid a hand forward to tease through Twilight’s hair.
“Hey, hey…it’s all right.” She cooed. “Like I said, it’s just sex. Twilight, you want this sleepover to be the best one ever, right?”
When Twilight looked up, even though she was still flabbergasted by the scene in front of her, the truth remained plastered on her face. With a slightly trembling lower lip and her glasses askew on her face, she offered a whimpering nod. In response, Princess Twilight smiled softly, stretched forward to peck her human self’s forehead with a tiny kiss, and whispered.
“Then help hold me steady while I make your brother cum, okay?” She cooed. “And afterwards, we’ll sneak back downstairs, wake up the girls, and tell some scary stories. Deal?”
“Well…” Twilight Sparkle murmured, considering the terms for a moment. “Scary stories were scheduled for tomorrow’s sleepover, but…okay! Let it never be said I’m not a fun hostess!”
And as she said those words her arms looped underneath the princess’s arms, ready to keep her steady while her older brother pumped that identical pussy with cum.
***
Catching her other dimensional self riding on her brother was a strange experience for Twilight Sparkle, but that was to say nothing about what Shining Armor was going through. One minute, his sister’s strange guest slipped into his room and cheerfully asked if he’d like a goodnight blowjob, and before a full hour was done he was caught by Twilight and the new girl was still bouncing up and down on him. Despite the circumstances he kept himself focused on the task at hand, that being continuing to stretch Princess Twilight’s nethers out with his rigid teen cock, thrusting into her while she moved to hug her human counterpart. And while it was certainly flirting with danger to be doing this so close to his little sister, Shining Armor wasn’t of a mind to stop anytime soon. After all, when else would he ever get the chance to fuck an actual princess? He was sure Cadance would understand!
As the two Twilights collapsed together, it was clear that the princess was of a mind to make sure that the human Twilight felt wanted and needed in their experience. She held her close, moved her lips to work up and down the other girl’s throat, and even slid a hand underneath the back of Twilight’s pajama top, teasing her fingers across the other girl’s spine. It was all shockingly intimate for the otherwise virginal young woman, but the fact that just a few inches away she could catch sight of her naked brother’s face while his cock was being milked had a tendency to take the edge off a few errant caresses. Twilight even found herself growing more and more curious as she clutched her naked counterpart, and managed to squeeze out a few questions in between long breaths laced with the scent of lust.
“Do…do you really do this kind of stuff with everyone?” She asked, sounding more than just a little jealous. “All of my friends downstairs? The principal?”
“Sorry, Twilight, I really thought you knew.” The princess cooed softly, and continued to shift her hands across the other girl’s body. One even eventually pressed against Twilight’s tummy and slid straight down, creeping underneath the top edge of her pajama bottoms. Before long she was petting a sensitive, identical pussy through a pair of snug fitting panties, and the human Twilight shivered rather than recoiled. The princess just beamed, nudged her nose to the other girl’s cheek, and whispered with a soft, playful voice. “Cum with me, okay? You’ll feel a lot better once you get it all out of your system…”
Twilight Sparkle gave a nervous squeak, and though her mind naturally wanted to volley the request back and forth while she litigated all of the points, her head nodded sharply without even thinking about it. And just like that, she found her mouth locked against that of the visiting pony princess, a tongue creeping into her mouth that wrestled her own and made every part of body go weak. At the same time, Princess Twilight slammed her hips down on Shining Armor’s cock to take him all the way down to the hilt, and she fell into a pattern of riding him with vigorous, energetic strikes as she continued to pet the other woman’s sensitive folds.
“...this…this is so fucking weird…” Shining Armor whispered to himself, but couldn’t bring himself to interrupt the sight of two Twilights desperately making out. If anything, it started to push him closer and closer to the edge, with beads of sweat clinging to his brow and his muscles twitching in the precursor of a climax. He did his best to hold out for as long as he could, but if the sight of the princess’ purple ass bouncing up and down on his lap wasn’t enough to push him over the brink, then watching her open up his little sister’s shirt to fondle her tits certainly was.
By the very end of it, Shining Armor did endure long enough for the two Twilights to cum…but only by mere split-seconds. It was actually the human Twilight that broke first between the three of them, unleashing a sharp squeak that was thankfully muffled by the princess’ hungry kiss. She shook and she vibrated, clutched the other Twilight with her arms wrapped taut around her back, and then gave in to a convulsing climax just from the princess petting her panty-clad pussy. Judging by the sounds, Shining Armor could only assume it was an intense one, but his own thoughts were stolen as Princess Twilight launched herself down with one last, mighty strike.
It brought both of them to a sudden peak, with Shining Armor’s eyes crossing and Princess Twilight murmuring happily as that hot, thick cock stuffed inside of her began to unload. Rope after rope of thick human cum flooded her recently-pony pussy, and she pulled her lips away from Twilight’s own so her moan could escape into the open air. While Shining Armor whimpered and continued to flood her nethers, Princess Twilight made a real show of it - craning her back and fondling her own breasts, spreading her thighs so Twilight could see how tightly she was gripping her big brother’s cock, and flicking her hair in such a way that it hit her human counterpart first, and then Shining Armor’s chest upon the completion of its arc.
The two siblings were left stunned and shocked from it all, casting nervous glances at each other and naturally dwelling on what had just happened. Twilight looked like she was ready to bolt for the door and Shining Armor as if he was going to hide in his closet. The only saving grace between the two of them was the fact that despite the strange circumstances, neither one of them had really crossed any lines with each other. The brother and sister barrier hadn’t technically been crossed.
At least…until the visiting pony princess gave a soft sigh, and leaned back further on Shining Armor’s lap.
“All right, Twilight…” She whispered, and a hand slinked down to grasp Shining Armor by the base. She gently ushered him out of her entrance to allow his length to rest, and in doing so revealed that her lovely, smooth, juicy hole was left overflowing with rich, creamy white. The princess gazed at Twilight with a sultry smile, and whispered. “Since Pinkie Pie’s still downstairs, I guess I’ll have to provide your midnight snack.”
Twilight Sparkle and Shining Armor both looked at each other, eyes wide and color draining from their cheeks. Nothing was said between them, but they knew…they were going to need to talk about this on Monday. But for now, Twilight Sparkle slowly started to lower herself down to the mattress, and with a nervous gulp positioned her hands against the inside of the princess’ thighs.
At least she knew…Princess Twilight Sparkle was having a great time at her sleepover. Even if things had veered drastically off schedule.
The End.