Hello everyone! This story is told in six parts - make sure to check out the previous chapter before reading this one! This is also the last chapter; I hope you all enjoyed this story~!

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This story contains: Scat, watersports, shit eating, mild BDSM, teasing, some futa stuff down the line

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Word Count: 2864

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	It had been a long night. Almost everypony in Twilight’s room looked as though they’d been dragged through a puddle of mud; each was covered in shit, their fur matted with it, their manes stained and streaked. However, there was still one pony remaining who still looked fairly clean, besides her own ass. 

	Twilight had been the first to take her turn as the one shitting on someone else; because of that, she’d managed to put off her time being the sub for a good while. However, it was bound to catch up to her, and now that everypony was at the peak of their lust and horniness… it was finally her turn. 

	And Pinkie Pie was about to make sure she’d look just as dirty as everypony else. 

	Twilight gulped nervously as Pinkie Pie pulled her into the middle of the room, onto the squishy, shit-stained and piss-damp carpet that had been a shade of white at the beginning of the night. There was no pony here who she inherently feared more than Pinkie Pie - you never knew what that part pony was going to do next. Nobody understood how she managed to eat so many sweets while still staying perfectly lean and healthy… though they did know all that sugar had to come out somewhere.

	And now, Twilight found that “somewhere” right in her face.

	“Lay down, Twilight! And hurry - I don’t think I can hold this much longer~!”

	The unicorn chuckled as she laid down, listening to the soft squish of her belly and hooves rubbing into a freshly laid pile of scat. The mushiness made her shiver in disgust… and lust. Her heart battled between a feeling of fear and worry over how gross this would certainly be, and a feeling of intense lust at the thought of the pink pony turning her into a toilet of a pony. She’d suggested this kink for tonight for a reason - she’d been into it for ages, to an insane degree. As she laid there, she watched Pinkie Pie’s big smile as she turned around, putting her ass over Twilight’s head.

	She’d noticed it before (as had everyone else in the room), but with Applejack as a close second, Pinkie Pie certainly boasted the largest ass of anypony there. Somehow, all that cake and candy managed to settle its weight right into her rear. If she were to sit on you, there was a fairly good chance you’d be suffocating within moments.

	Her tail raised into the air, careening upwards; her cheeks rumbled. They were both soft, fluffy, and insanely squishy, like sponge cake. Twilight found herself wondering how her diet was going to affect the ensuing onslaught of shit. What would the consistency and form be like? How would it taste? How would it smell? She huffed as all the possible facts and information swirled in her mind; she could do a full study on this simple thing… honestly, she was tempted to, just to spend a little more time with Pinkie’s rear in private. She didn’t hear the other ponies giggling and murmuring about how Twilight was staring directly at the earth pony’s ass with her mouth hanging open, a tad bit of drool leaking out, eyes sparkling in wonder. 

	“Ready, Twilight~? Well, it doesn’t matter much if you’re ready or not, because I don’t think I can hold it back anymore!!”

	“Oh, I’m rea-” Twilight began to speak, struck from her intense mind-wandering, only for her words to be interrupted by the sound of a monstrous fart. It sounded like a trombone going from low to high notes, with the slight pop of a bubble somewhere in there; it was fitting to Pinkie Pie. Her cheeks flapped in the gust exiting her hole, Twilight’s fur ruffling in it as though she were caught in a storm. She shook her head back to place… and caught a whiff of the gas. 

	“Oops! Sorry, Twilight - I didn’t realize I was so backed up! Hee hee!” She giggled to herself as Twilight gagged and coughed on the stench. It smelled like the fart of a pony who was sick with food poisoning or the flu, with the scent of pure shit heightened and overexaggerated. At the same time, it had a heavy hint of sweetness baked in, overwhelming the senses with an unexpected and difficult-to-parse combination. Her body quickly rejected the scent… but the hornier part of her mind wanted more. There was something especially disgusting about this, something that was so uniquely Pinkie Pie. 

	“I-it’s ok, Pinkie,” Twilight said, her voice strained; she coughed immediately after finishing her sentence again. The smell was not fading. She soon realized that things were about to get a whole lot more… solid.

	Pinkie Pie inched her ass closer and closer to Twilight, soon positioning her hooves by the unicorn’s head, hovering her cheeks right above her face. She cast a dark shadow on the pony below; the princess listened close, hearing the sounds of her tummy rumbling and gurgling away. It sounded wet and bubbly; she could see the stomach visibly shaking. This was going to be a very fresh load - it seemed her body was still actively digesting whatever she’d eaten that day. “Ok, it’s coming~!” Pinkie declared with glee.

	She squatted over a tad, holding her ass closer to Twilight’s face. The unicorn could smell it - there was something horrible cooking in there. She watched closely as the cheeks parted, awaiting the sight of a log slowly creeping out to land on her head, anticipating the feeling of the greasy solid mass…

	…but that was not what came out.

	“Urgh…” Pinkie’s stomach grumbled louder; she put a hoof to her belly. “I don’t feel too great, Twilight. I think I ate a little too many cupcakes today… though I almost always do that.” She winced at the feeling her stomach ache increasing; Twilight got a look at her tail hole, twitching rapidly. “I-it’s coming~!”

	“Pinkie, are you-” Twilight’s questioning concern was halted by the sudden rush of a tsunami of shit. Pinkie’s body shook as she bit her lip, her hole torn open, as a mushy waterfall slid from her body. The waste she produced could barely be considered solid - it had a consistency resembling watery mud, slimy and squishy, lacking any consistent form, but full of multiple solid bits and pieces. The wave crashed onto Twilight’s face, right in the middle, where her snout met her eyes, and it poured all over her head, coming out with a large splash radius.

	It felt like she’d had liquid concrete dumped on her, so gooey and liquidy. Twilight quickly shut her eyes to prevent her from getting anything in them. She could feel it all sliding and smearing around her head as it came out in droves, drenching every bit of her furry face, sliding down her snout, getting caught in her ears, dripping past her lips and even making its way inside. The taste was much like her farts - extremely bitter, as all shit was, but with a lot of sweetness included at the same time. Overwhelming and gross. As though she were standing outside in the snow, she happily stuck her tongue out for more, giggling as she was frosted like a chocolate cake.

	“Mmrgh…” Pinkie Pie groaned and grunted over and over; she wasn’t in control of her shit at this point. Her body was insistent on disposing of every single bit of digested food in her system, and it wasn’t going to stop until it was all gone. A puddle soon formed beneath Twilight, spreading out across the carpet; she looked like a marshmallow dipped into a pool of chocolate. She would never get this all out of her fur - she might as well consider dying her hair brown just to cover up the streaks. She didn’t mind that at all - she only worried that, at this rate, she wouldn’t be able to offer Pinkie her tail to wipe with, which, honestly, was the part she anticipated most.

	The part pony leaned down and angled her ass into the air; Twilight opened her eyes as she felt the shit stop splashing onto her head, and instead felt it streaming down her hair and onto her back. Great glops of diarrhea rained down on her, fired into the air like party streamers. She laughed, eagerly rolling over in the quickly-forming pool of shit like she was playing in the mud, letting Pinkie drench her already shit-stained underside. The waste was nice and warm, coming out so fresh from the body-warmed innards of the earth pony; it felt amazing to feel it dappling onto Twilight’s pussy. The unicorn licked her lips as she rubbed it in, swallowing down even more, shivering in a disgusted orgasm as she rubbed herself. Still, though, the shower wasn’t stopping… and the unicorn wanted to do more than just sit there and take it.

	Her horn slowly began to glow; she focused her magic on casting a spell, one she’d learned only recently, specifically made for fun times with her friends. Her pussy was soon covered in magic, and, in a small flash of light, was replaced with the sight of a foot-long horse cock, matching the color of Twilight’s fur. The other ponies murmured in surprise; it was an impressive length for sure, one that made some like Fluttershy and Applejack blush quite hard. Pinkie didn’t notice… but Twilight was about to force her to.

	The diarrhea-fueled pony was slowly coming to her senses, though her ass was not slowing - not enough time had passed for her to empty it all out. She looked behind her excitedly, expecting to find that she’d completely drenched Twilight… and indeed, that is what she saw - the unicorn was more than just covered. She was dripping with it on all ends, head to hoof. However, what surprised her was to see that the unicorn was now standing… and that she had something unfamiliar between her legs, also covered in slimy shit. “Wanna have some real fun, Pinkie~?” Twilight asked, walking forward and putting her front hooves up on Pinkie’s back, her stomach hovering over the still-shitting ass.

	“Oooo, yes yes yes!!” She’d never turn down an opportunity for fun… and from the looks of things, this was going to be quite a lot of that.

	“Good~” Twilight lifted her cock up with one hoof and slid it between Pinkie’s cheeks, but didn’t enter her still-roaring hole; instead, she hot dogged the pony, sliding her cock inside her extremely slimy cheeks, up and down, enjoying the sensation of that dirty ass sliding against her bare meet. It was perfect lubricant; it was so smooth, and at the same time, so chunky, warm, and wet. She felt herself shivering, moaning from the pleasure of the rub; Pinkie shook every time the length came close to entering her ass, eagerly awaiting Twilight’s invasion of her insides. 

	“Come on, Twilight!! I’m so horny~!” She begged, her hole still twitching as it spurted shit right onto the cock between her cheeks. “I want you to ram me so hard I can’t walk for days!!” Her high-pitched voice made her words sound ridiculous, but they were absolutely filled with passion. 

	“Mmmm… mmm~” The unicorn moaned, chuckling between the sounds of pleasure. “Alright, Pinkie - you asked for it~” She pulled her cock out of the cheeks and repositioned, lining it up with the hole. And, as she stared at the slimy, shitty hole, with little bits of mush still trickling out, she shoved herself inside.

	“Oh!!” Pinkie Pie gasped in surprise, her front hooves sliding down as did the rest of her upper body. Her back arched downwards, ass sticking up into the air, back hooves firmly planted in place; Twilight held the cheeks tight as she could with her hooves and rammed the pony as hard as she could. She let out a tiny grunt with each thrust, pushing her foot-long cock as far in as she could every time, watching it bulge from Pinkie’s stomach, only to pull it all the way back out and be greeted with the sight of a clump of mushy shit falling from the ass.

	Twilight felt all the waste backed up inside Pinkie’s slimy, dirty asshole. It was such a mess in there, a liquidy, mushy mess, packed to the brim with brown and covered on the outside. It was far better than any normal lubricant, so much more hot and wet, so much more greasy and gross, she loved it. The sound of her tip sliding further, digging deeper into it each time, was like slime being stretched and squeezed, or the sound of a pony slurping up a drink. She quickly sped up her thrusts, Pinkie Pie’s face showing the intense pleasure of the fucking, her tongue rolling from her open maw as her pupils turned to hearts. 

“Oh, Twilight, harder, harder~!” She begged, even as her asshole burned from the release of so much diarrhea. It felt so raw, and so, so needy, and only Twilight’s cock could fulfill that need at the moment.

	“As you wish~” Twilight did as asked, pounding her even harder, even deeper, pushing out a squeak or a moan with each entrance. She felt the waste breaking apart from the force of her shaft; every outpouring was mushier than the last. “Mmm… oh, mmmm~ Pinkie, I-I think I-I’m gonna burst~!”

	“Do it!! Fill me as full as you can, Twilight~!”

	The unicorn made a few final, fast strokes as she felt her cock getting more sensitive and tingly. She felt the cum rushing through her system, filling her shaft, soon begging for a release as she pounded just a few more times, determined to get out every single bit of pleasure from this as she could before it was finished, until she absolutely couldn’t hold it even a moment longer. 

	She thrust all the way in and let it all out. Moments after she stopped moving, she felt her dick pulsing and throbbing with huge spurts of white - apparently, her spell made her produce full-on semen instead of just femcum. Neither pony was complaining, though - Pinkie felt like a cream-filled donut, filled to the brim with Twilight’s milky seed. She squirmed in pleasure, hardly having to touch her clit to orgasm, her body shivering and shaking in intense lustful release. White and brown both dripped from her hole.

	The two huffed and panted, covered in sweat, regaining their breath as Twilight gently removed her shaft from Pinkie’s hole. It was much more covered in shit than before, so covered that not even an ounce of Twilight’s normal color was visible. She quickly flopped onto her back, shit smushing below her, as she rested, so exhausted from that encounter.

	Pinkie’s ass released one final big clump of shit, bringing a good bit of cum with it, too, though not all - she could still feel the sticky seed inside of her. The release of both her immense load and her horniness made her feel relieved and satisfied as could be; it was an amazing way to end the night.

	And of course, the audience had enjoyed the scene immensely - it was one of the most intense turns anyone had taken. Pinkie wasn’t kidding when she said she was going to make Twilight the messiest pony there. 

	Rainbow was the first to walk over to the circle, curiously prodding Twilight’s still-hard cock; she pressed her hoof right on the tip. “Wow… is this permanent?”

	“Mmm!!” Twilight moaned; Rainbow was surprised by a slight spurt of white from the still-sensitive shaft. 

	The pegasus chuckled; admittedly, she felt tempted to do more than just poke it… but that would be for another time. She wasn’t the only pony in the room feeling that way, though - that new bit of magic was going to make for some fun nights for everypony involved.

	The ponies had a brief discussion on cleaning up, and decided that the best course of action there would be to simply save it for tomorrow - they were all exhausted. Each one of them found themselves sleeping somewhere in the room, all cuddling one pony or another as they headed to sleep, drifting into wet and dirty dreams inspired by one of the most fun nights of their lives. This wouldn’t be the last time they’d be experimenting with the dirtier parts of the kinky spectrum - this was only the very beginning. 

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