Rarity has an 'Accident'

by Odlaw

Rating: mature
Tags: Profanity, My Little Pony: Friendship is Magic, Anthro, Porn, Fetish, Rarity, Fluttershy, Sex
Length: 3955

Rarity has a secret and messy fetish but has never tried it herself. One day she finally builds up the courage to give it a go.

Rarity has a very messy fetish that she has kept a secret from everypony else. Yet, she has never actually practiced it herself. One day, however, she finally builds up the courage to give it a try...

Contains: (Scat, Watersports, Implied Flarity)

Cover art is NSFW so I can't link it here. If you are interested in finding it, as it does relate to the fetishes in this story, just look for the artist: 'Kloudmutt' and the tag 'Pantypoop' on Derpibooru.

My first original non-soiled universe/request story!

Published 2018-01-08 23:10:11 UTC
Last updated 2018-01-08 23:10:11 UTC

The Rough In The Diamond

Rarity stood anxiously in the middle of her bedroom, late at night, going through a mental checklist one final time. All the curtains were drawn, Sweetie Belle was currently out of town with her parents for the entire week, the boutique itself was closed, and Rainbow Dash was at the Wonderbolts academy.

With a stressed sigh, Rarity started back at herself in the full-body mirror that was set up in front of her. She was wearing nothing but a simple pair of light blue lace panties, leaving the rest of her curvaceous figure completely barren and exposed. She felt so vulnerable and awkward just standing around like this, but at the same time, she was excited. Tingling shivers ran constantly down the back of her spine.

She was almost never naked, at least outside of her own bathroom at least. Even when completely alone in the boutique, she would at the very least be wearing some kind of robe or nightgown over her underwear. She certainly didn't normally walk around completely topless, with her large and perky D-Cup breasts resting openly on her chest. There were just too many risks with doing something so... indecent. Her sister could suddenly barge in without knocking or Rainbow Dash might crash through one of her bedroom windows during a crazy stunt of hers. Even a slightly ajar window curtain could allow some pervy colt to get a quick peek at her alluring form.

Tonight, however, was a special night. Tonight she would finally be indulging in one of her dirtiest and by far most taboo fetishes for the very first time. Up until now, she'd been forced to resort to purely fantasizing to get her fix. Or, when she was really desperate, she'd search for one of the incredibly rare pornographic magazines that could cater to her specific needs.

Truthfully, Rarity had always wanted to try it out for herself, but she'd never been able to work up the courage to actually go through with it. She'd set up a day, much like tonight, but every time she would always end up changing her mind at the last minute.

But this time was different. She had gone through every step of her plan to the letter and now had no reason not to indulge in her secret desires. Tonight was the night that she was going to have an accident... on purpose.

It all started about five months ago when she had gone to visit Fluttershy at her cottage...

*Knock, Knock, Knock!*

"Bwa? Oh! Uh, just- *sniff* -just a minute!" Called the muffled voice of a very congested sounding Fluttershy.

"Oh dear, she sounds just dreadful." Rarity mumbled to herself as she stood at the front door of the pegasus's cottage. 'I hope she is not suffering too much...' She thought, deeply worried for her best friend.

The poor pegasus had recently come down with an awful case of the feather flu and had been stuck inside her cottage for the past week. Feeling sorry for her, Rarity felt it would be best if she came to visit and see if there was anything she could do to help while Fluttershy got over her illness. She was not all concerned about getting sick herself. To her, all that mattered was making sure one of her longest-standing friends was doing okay.

Rarity heard the faint sound of light footsteps approaching from beyond the front door before it slowly creaked open, revealing a very pale looking Fluttershy. Her eyes were baggy and tired looking, her mane was a complete and utter tangled mess, and her nose was red and swollen. She wore one of her favorite green turtleneck sweaters, along with a small pair of pink panties that featured a cute picture of a bear cub over the front.

Her lack of modesty when answering the door spoke great lengths about how bad she was feeling. The yellow mare was normally terrified of just being seen without one of her hoodies on by a stranger, much less with just a pair of panties to conceal her privates.

It seemed to take the sickly Pegasus a few moments to concentrate on her guest, squinting to focus her vision.

"Oh! Rarity, it's you. W-what are you doing all the way out here?" She asked, lifting a hand to up to rub up under her inflamed nostrils.

"Why, whatever do you mean Fluttershy? I came here to see you of course!" Rarity declared dramatically. "I heard that you caught this year's wave of feather flu from Twilight and I simply had to make sure that you're doing alright." She explained.

"Oh its quite- *sniff* -alright. You shouldn't worry too much about me. Plus, I don't want to end up getting you sick too. It's really- *sniff" -b-bad this year." Fluttershy replied, almost constantly sniffling in an attempt to fight back her runny nose.

"Darling, you simply must allow me to help you in your time of need, I insist! No offense, but you are looking positively dreadful and I know you simply mustn't feel well either." Rarity said, not about to take no for an answer.

"Well... okay... just promise me you'll be extra careful! I really don't want to get you sick..."

Fluttershy stepped aside, sniffling again as she allowed Rarity to enter before closing the door behind her.

Rarity gasped as she spotted what seemed like a literal mountain of used tissues pilled up next to Fluttershy's couch. A large pile of randomly assorted blankets and pillows were also bundled up on the couch as well, likely where Fluttershy had been resting when she knocked on the door.

"Oh, I'm so sorry if I woke you up with my visit." Rarity apologized, remembering how awful it could be trying to get to sleep when one was sick.

"Its fine Rarity, I haven't been able to get to sleep because- *Sniff* -I have this really bad headache that I...that I-" She stammered, head slowly rearing back and eyes squinting shut.

*Ahchoo!* *Pwwft!*

A huge sneeze exploded out of the sickly mare, followed immediately by a brief toot of gas from her behind. Nose dripping with snot, Fluttershy blushed as her tail suddenly shot upwards.

"Oh... um, excuse me just a minute Rarity," Fluttershy quickly said before turning around and making her way towards the stairs, b-lining for her bathroom...

A few minutes later, Fluttershy finally emerged from her bathroom, though she was looking less than pleased about something. Rarity had just finished tidying up the living room as she descended the stairs, having disposed of all the disgusting, flu-ridden tissues that were littered on the floor. Now in the kitchen, Rarity was preparing some delicious soup for the two of them to share. As Fluttershy sat down on her couch, the unicorn emerged from the kitchen holding two bowls with her magic.

"Ah, there you are darling. Feeling any better now?" Rarity asked, levitating one of the bowls towards Fluttershy.

"Well..." Fluttershy sighed, only to gasp as she suddenly noticed all the cleaning that Rarity had done while she was in the bathroom. "Oh, Rarity, you didn't have to do all this-"

"Up up up, nonsense darling. It was absolutely no problem at all." Rarity interjected before the mare could get worked up, holding a bowl of soup out in front of her. "Plus, I wanted us to spend some quality time together, you were unable to come to our weekly spa meet after all."

"Oh my gosh! I completely forgot about that! Oh I'm so sorry Rarity!" Fluttershy gasped, panicking as if she had just committed a serious crime.

"Oh, it's perfectly fine darling, don't worry about it. Your wellbeing is far more important than one of our silly little spa meets. Now, relax and have some refreshing soup." Rarity consoled, scooting over on the couch and patting the seat next to her.

With a sigh and another congested sniff, Fluttershy grabbed the floating bowl out of the air and walked to the couch...

A couple of hours passed and the two of them had discussed a variety of different topics. From how Rarity's boutique in Canterlot was doing, to one of Fluttershy's newest squirrel friends. Having already drained they bowls of soup, Fluttershy allowed her eyes to wander across the quiet room.

"Oh!" Fluttershy suddenly gasped mid-conversation, having just noticed the time on her wall clock. "I need to feed my birds before I forget!" She exclaimed, jumping up from the couch.

"Well, I don't want you to strain yourself, is there anything that I could do to help?" Rarity asked.

Fluttershy shook her head firmly.

"Not really I'm afraid, most of my animals- *sniff* -will only eat when I'm the one feeding them. Don't worry though, I won't be going very far and I'll be careful." Fluttershy assured, walking over to a closet where she kept various types of animal feed.

"Well, alright, just don't hesitate to ask if you need anything." Rarity said, watching the yellow pegasus as she hauled out a large bag of bird feed and flew out the back door.

There was a small window next to the door, allowing Rarity to see most of the cottage's backyard. She watched from the couch as Fluttershy went from birdhouse to birdhouse and nest to nest, the birds all coming out to meet her as she approached their homes.

With her sometimes needing to bend over as she poured our seeds, Rarity couldn't help but notice how tight-fitting Fluttershy's current panties were. They must have been one of her older pairs as the taut fabric was giving her quite the revealing cameltoe. Rarity found herself blushing but was unable to force herself to look away. She watched attentively as the beautiful pegasus flew from place to place, her long, flowing pink mane and tail always following behind her. Even from this distance, she could occasionally get a glance at the mare's sparkling blue eyes.

Thankfully, as the next few minutes went by, nothing had gone amiss so far, with Fluttershy's final stop being her chicken coup near the window. With the big, heavy-looking bag in her arms, Fluttershy hovered her way into the pen. The chickens in the coup realized who was there and flooded out.

Then suddenly, as Fluttershy was bending over to fill one of their bowls, she froze mid-pour, allowing much more of the chicken feed to empty out into the bowl than it could properly hold. Noticing her sudden lack of movement, Rarity was about to call out to ask if she was alright when... it happened.

From Fluttershy's bent over position, Rarity had a perfect view as Fluttershy's panties suddenly tented outwards, as if being forcefully pushed out by a thick finger. The protrusion collapsed after a moment of stretching the fabric, creating a bumpy, roughly orange-sized bulge in the mare's panties.

She had just pooped in her panties.

Rarity watched with wide eyes as Fluttershy continued having an accident, the bulge growing larger as the pegasus filled them with more brown sludge. Her sickness had very clearly had an effect on the consistency of her poop, making it mushy and sticky. Due to how tight they were though, Fluttershy's panties refused to let any of the mess escape its confines, forcing the mess to spread out inside them.

After what felt like ages, she finally appeared to finish vacating her bowels, the bulge now almost the size of a grapefruit as it sagged down from her butt. The chickens beneath her seemed oblivious as they freely ate from the open bag which she had ended up dropping during the ordeal.

As Fluttershy slowly straightened back up Rarity watched in stunned silence as the mare reached back and cupped the large, lumpy mound with the palm of her hand. Rarity, who now found herself standing infront of the window, saw Fluttershy start to turn and quickly ducked down beneath the window. As Fluttershy peered fearfully over her shoulder, Rarity's mind raced from what she just witnessed.

'Should I do something? The poor dear would no doubt be extremely embarrassed to be seen by anyone in such a state though...'

She likely didn't have time to react, the speed of the sudden rush of poop filling her panties making that quite clear. Deciding the best thing to do was to pretend to not to have seen anything, Rarity sneaked back over to the couch, her heart still beating as she found herself replaying the event in her mind over and over again. Why did it make her feel so... strange?

After a few silent minutes, Rarity heard a brief commotion coming from upstairs, followed by the sound of the bathroom door quickly slamming shut as a yellow blur rushed into it. A few moments later, the sound of a shower being turned on was audible.

'The poor thing must have been too embarrassed and flew in through a window upstairs.' Rarity thought.

She'd have to find some way to comfort her when she did eventually return while being careful not to reveal that she had actually been watching her have an accident. Though, as the sounds Fluttershy's shower continued, Rarity couldn't help but keep revisiting the fateful event in her mind. She knew that she should feel disgusted, nauseated, or something like that after witnessing what she did, yet she felt none of those things. Well, she was feeling... something, and it wasn't sitting well with her at all...

When she did finally emerge after her shower, Fluttershy was wearing a completely different outfit. Stuttering anxiously, she started making up excuses as to why she had suddenly decided to change, and Rarity just accepted them all. Fluttershy was very clearly relieved to be able to move on from her experience.

Thankfully, the rest of Rarity's visit had gone without any further incidents, and she eventually went back home, thoughts clouded as she fought with the fact that while witnessing Fluttershy have her accident had been pretty gross... it had also turned her on, a lot.

As Rarity finishes recounting the conception of her fetish, she realized she was no longer able to put it off. Staring back at herself in the mirror, a new train of thought crossed her mind.

'How am I going to do it?'

She had never gotten this far before even though she had planned this event far in advance. It was not so much a matter of not needing to go...that she certainly did. She had purposefully not had a bowel movement for many days and had eaten food which promised to provide a big one. Mentally scanning through her previous fantasies and thinking back to the magazines she had stowed away, she went through some ideas.

The most common positions that were depicted in the magazines had mares squatting down on the floor but Rarity quickly dismissed that option. It felt too...dull. If she was going to do this it had to be something unique. She very briefly considering doing it while in bed but decided she didn't want to do anything that could ruin the sheets or mattress. As she mentally scrolled through different ideas she laughed to herself.

Here she was, one of the most famous fashionistas in all of Equestria, a Nationwide hero, a pony who was infamous for her hatred for the outdoors and the unclean, and she was currently trying to decide to most pleasurable and satisfying way to shit herself. Just the thought of it, the very naughty and dirty idea of it all provided her with the perfect idea...

Rarity alone stood backstage, tapping her foot nervously. She would be called out soon, tasked with walking up and down the long stage to personally present her newest line of lace underwear to a large crowd of critics, fashionistas, and many other famous ponies.

What had her nervous though, wasn't what she was wearing or even how much they would like it. It was the fact that she really needed to use the bathroom. She had been far to busy and had never had the chance to go before this point. The pressure in both her bladder and bowels was immense.

Breathing deep, she tried to calm herself down. Everything would be fine. She would walk out there, pose for a few photographs and then come right back. Then she could make a mad dash for the bathroom. Now that she thought about it, she may have had some time right before the show, but it was too late now. She watched as the last model for the previous new clothing line walks off the stage, meaning it would only be a few moments until she was to go out there. The announcer is heard listing off the next set of outfits to be displayed. Her outfits.

Suddenly the curtains part, revealing Rarity to the crowd. She takes a moment to look out over the ponies. Fancy Pants, Photo Finish, and even all her friends were there, with Fluttershy staring at her with excited, awe-filled, eyes. Doing her best to keep her composure, Rarity begins walking down the long stage, trying to keep her every movement elegant and proper. All the while she was holding back a massive weight pressing hard up against her sphincter and an ocean of urine in her bladder.

As she finally reaches the end of the stage she begins performing various poses, all meant to show the style, functionality, and beauty of her outfit. It is as she is doing this that she decides to look back at her friends, just in time to see Fluttershy blow her a kiss from across the room, eyes lidded and wearing nothing but a pair of heavy soiled pink panties.

Stunned by this, she is taken completely off guard as she is suddenly hit by a massive cramp and is instantly forced into a bent over position, clutching at her stomach desperately with her arms. Unable to concentrate eyes widen in horror as she feels her anus ring slowly begin to widen, being pushed apart by a massive turd. At the same time, her bladder muscles begin to fail, allowing a spurt of pee Into her panties, creating a small wet spot between her legs. Rarity can only imagine the reactions of the crowd around her, all watching as she starts to lose control.

*Pwwffrprt* *Crackle*

With a burst of gas, her anus is stretched wide enough, providing the thick brown log with enough room to begin passing through. The bumpy head quickly makes contact with the inside of her pristine blue panties, stopping for a moment from the resistance of the fabric. It does not last, however, as with another push, the fabric protrudes out. There was nothing Rarity could do now, she was pooping her panties in front of everyone.

As more of her log emerges, its collapses over itself, the tent falling and becoming a heavy bulge. Her bladder finally gives in, the flow of urine elevating to a torrential flow, completely soaking her panties. The rush of pee streams down her legs like a waterfall before creating an ever-expanding pool around her feet. By now multiple layers of poop rest in her panties, the heavy load causing them to sag beneath her dirty cheeks. Before they can overflow, her long log finally ends, tapering of her filthy anus.

Around the same time, her bladder has almost completely emptied itself, leaving only a few small streams running down the inside of her thighs joining with the massive puddle below.

Rattled by a combination of immense relief and fatigue, Rarity collapses to her hands and knees, the bulge, which has stained through brown, hanging between her legs. Due to the weight of her load, her panties have become stretched enough to allow anyone to see poop resting inside.

Breathing heavily, Rarity slowly looks up from the floor, but instead of having an expression full of intense embarrassment and shame, her tongue lols out of her mouth, eyes lidded as her marehood positively burns from arousal. A different kind of transparent fluid joins the yellow urine in her once blue panties. Standing up carefully, as not to spill her load, Rarity looks out over the completely empty showroom of her boutique.

Her legs feel wet and sticky and the strong smell of urine and excrement fills the room. Lighting up her horn, she floats the full body mirror from her room and places it on stage behind her, looking back over her shoulder to inspect the damage. The once light blue panties are now a brownish yellow color and have even become partly see-through, showing the thick coils of the massive log. With a seductive giggle, she lightly wiggles her hips, biting her lip as Rarity watches the bulge sway from left to right.

Her left-hand drifts up, towards to her breasts, while the other reaches back, taking hold of her bulge from below. It is heavier and warmer than she had been expecting, a multitude of very naughty ideas filling her mind as her other hand gropes one of her breasts, squeezing it lustfully.

"Mnf~" She moans. "Oh, Rarity what a naughty little slut you are being, taking a big shit in your panties like the filthy whore you know you are."

Her own words only drive her arousal even higher, making her take hold of the bulge and pressing it up into her, smashing her warm mess against her once perfectly white butt cheeks. The lumpy mess smears and spreads over her rear, coating them with the sticky brown mush. Some of it even begins seeping up the crack of her butt and in between her legs. As she lets go, the mess stays in place, the slight indents of her hand and fingers remaining. She wastes no time redirecting the hand, itself stained brown, and forcing down the front of her panties, eagerly stroking it against her vulva.

She feels an immense burst of pleasure as she coats her marehood with the sticky mess, almost sending her over the edge. Moaning with every stroke she feels yet another heavyweight move into her rectum, and she all too eagerly begins pushing it out. The second log is much smoother than the first and quickly slithers out of her filthy hole. The sensation if it passing so quickly through her ass drives her crazy, intense pleasure rippling across her body as she approaches her climactic peak.

Right as she is about to climax she hears a ripping sound, her panties no longer capable of containing her massive load. They rip at the top of the bulge and promptly dump the contents onto the stage below, creating long streaking smears down the back of her legs. Staring back at herself in the mirror, she slams into her climax from the sight of her ass still completely covered in layers of thick poop. Her most recent log is still rushing smoothly out from between her cheeks, curling down to join what was left of her panties and the messy pile inside of them.

"Aaahh~!" Rarity screams out in pure ecstasy, legs wobbling she collapses forwards.

The last thing she feels before passing out is her last log finally ending, her anus still gaped wide. She then drifts off to sleep, a deeply satisfied smile on her face.

Author's Note

Been writing this on the side of my other requests stories, I hope you enjoy!

As usual, let me know if you spot any grammar issues or otherwise and let me know what you thought.