The Pony Centipede
Swallow it, bitch!-Dr. Heiter, The Human Centipede.
Oh shit! I have to shit!-Katsuro, The Human Centipede.
"It's the perfect, the ultimate sewing challenge! And how much fun it is!"
Rainbow Dash awoke from a sleep she didn't remember falling into, to see only pale yellow. She tried to move her heads and lips, but found she only could make muffled noises. The yellow started to move, and Dash could hear whimpering from in front and behind her.
"What's going on here?! H-help me!"
Then giggling arose, it was so innocent, but she knew that whoever had done this, was the one giggling.
"Don't worry Fluttershy." so that is what the yellow is in front of me, but how? She thought. "And you too, Rainbow Dash and Twilight Sparkle, want me to explain?"
"Y-yes! Please R-Rarity."
Rarity?! This doesn't make any sense!
"See I was watching a film called The Human Centipede and well ideas came to mind, I mean this scientist, Dr. Heiter, stitched so perfectly." She giggled again. "And I wanted to try it, well I don't have humans so I used my three best friends! Don't worry I won't kill you three, I"ll just torture you a little."
"T-torture?!"
More whimpering sounds came from behind Dash, and she herself couldn't help but whimper too.
"Now just eat up little Fluttershy, that's a good girl."
Fluttershy swallowed the pill that was held to her mouth, she felt instant discomfort in her bowls, and she realized what she was about to do.
"No! NO!"
Shit blasted out of her butt and Rainbow Dash, caught off guard, was forced to swallow the shit.
"Oh goodness! I'm s-sorry."
Seeing as the feces contained laxative Rainbow Dash too started to violently shit into Twilight Sparkle's mouth.
"Oh this is good fun, you three enjoying yourself?"
"N-no gosh! RARITY P-PLEASE STOP!"
"Oh don't be a spoil sport, the fun has only begun!"
Rarity pulled out a large whip and started giggling, and soon laughing louder, and louder.
"NO! NO! PLEASE STOP!"
"Oh shut the fuck up Fluttershy! You're ruining this all!"
Fluttershy stopped screaming, her face paled from fright. and Rarity struck them hard with a whip, the cracking noise it made making her hysterically laugh.
"Oh yes! YES! This is exactly how it should be! LOOK AT THAT STITCHING!"
Rarity bore a look of pure insanity, thwacking the three stitched up ponies with happiness. Watching in delight as they squirmed and soon fainted, she frowned but shrugged.
"No fun girls."