Twilight Sparkle was very attractive, but she was also very gassy. Especially when she ate hot dogs and beans, as she had done this particular night.

She would blush profusely with embarrassment whenever she accidentally farted in front of any of her friends. But, when it was just her and Spike, she felt no shame whatsoever, and would unabashedly and constantly fart in his presence.

As a matter of fact, she was a bit more mischievous around him.

Twilight was sitting on her bed on a winter night wearing a dark blue nightgown. Spike was resting, laying down curled up on the corner of the room.

PPPPFFFFFT

"Ugh," said Spike, wrinkling his nose. Because he was a dog, his nose was more sensitive, so Twilight's farts were more smelly to him than to her.

Twilight grinned mischievously. She pulled her nightgown up, revealing her white panties, and put her butt against Spike's muzzle.

BBBBBBBBRRRRRRRRRRAAAAAAAAAP

Spike recoiled while Twilight giggled hysterically.

"Twilight, can you not... Oh, I have to go to the bathroom."

Twilight opened the door into the backyard. It was chilly outside, and it was snowing lightly. Spike ran out, did his business, and ran back into the house, shivering.

"It's so cold out there! Why do I always have to use the bathroom outside? You get to poop in a nice warm bathroom!"

"Why should you get jealous?" said Twilight. "You have so many more places to go than me. Whenever I have to go, I always have to get to a toilet."

"Well, let's see how you like not using a toilet!"

"What do you mean?"

"I dare you to not use the toilet for the rest of tonight, and all of tomorrow!"

"What?!?"

"When you have to pee, or poop, do it anywhere other than a toilet. Including at least once outside in the snow."

"That's..." She thought for a moment. "You know what? I'll do it. Why not? It's just you and me here." She farted loudly. "Time to go to bed. But first, I have to pee."

Twilight started to walk to the bathroom, but remembered her dare. So, she walked to the corner of her bedroom, hiked up her nightgown, pulled down her panties, and peed in the corner. It felt weird to be peeing like this, but part of her did like it.

Once she finished relieving herself, Twilight pulled her panties back up, jumped into her bed, snuggled under the covers, and fell asleep.

She farted several times in her sleep, but Spike slept through it all.

...

Morning came. At the sound of the rooster, Twilight sat up, yawning and stretching her arms. She changed out of her nightgown and into a light blue T-shirt and a cute pair of short, purple shorts, with a white bra and matching panties underneath.

She looked at herself in the mirror, first the front, and then the back. Her butt looked so cute in these shorts.

FFFFFFFRRRRRRRT

Twilight giggled as she let out a loud, wet fart, which woke Spike up. Then she realized she needed to pee. She had just her hand on the bathroom door handle, when she heard Spike's voice.

"Nuh-uh! Remember your dare?"

"Right," said Twilight, blushing lightly. She walked back to her corner of her bedroom, which had mostly dried but smelled funny. She pulled down her shorts and panties and sighed in relief as the pee flowed out of her, splashing on the carpet below. Once she was done she pulled her shorts and panties back up and made her way to the kitchen.

After giving Spike some dog food, Twilight walked into the kitchen and began cooking some toast, one big plate each of beans and scrambled eggs, and a big glass of prune juice to go with it.

Spike chuckled to himself. This was a lot to eat at once, and the prune juice would definitely have an effect on her!

Once Twilight finished her breakfast and drank her prune juice in one gulp, she walked over to her computer and began researching. She farted several times, but too absorbed in her studies, she didn't even giggle.

After about an hour, Twilight needed to take a dump. Peeing outside of a bathroom was one thing, but this would be a lot messier.

Twilight walked into the bathroom. Spike ran in after her, thinking she was going to use the toilet, but instead she walked into the bathtub. She pulled down her shorts and panties, and squatted down. It didn't make a sound, but she could feel three logs make their way out of her butt. It didn't take long for the smell to reach her nose, and she nearly gagged. This smelled a lot worse than her farts.

Once she was done, Twilight pulled her shorts and underwear back up and looked at the mess she had made in the bathtub.

"Oh yeah, I forgot to mention," said Spike. "You're not allowed to clean anything up until the end of the day."

"Oh, NOW you tell me," said Twilight, but she left her mess where it was and sat back at her desk.

"I need to go too," said Spike.

Twilight opened the door to her backyard and let him out. It was no longer snowing, but the backyard was full of snow, and it was still cold. Twilight shivered until Spike came back in.

"Remember, you have to go at least once outside in the snow," said Spike.

"Right," said Twilight, who wasn't looking forward to it.

...

At noon, Twilight stood up and cooked a lot of hot dogs, as well as pouring another big glass of prune juice.

The instant she finished pouring the juice, she let out a very boisterous, wet fart. She felt like she had almost soiled herself there, and soon, she could feel the pressure in her bowels that wasn't gas.

She also needed to pee.

She stood in the middle of the kitchen, pulled down her shorts and panties, and squatted down.

PPPPPBBBBBTTTTHHHHRRRRT!

A noisier, wetter brown mess than the last time made its way out of her rear, about three seconds before she started peeing. It felt very weird doing this, and she was glad no one but Spike was around to witness it. She blushed a little, but had to admit it was quite a thrill.

She pulled up her shorts and surveyed the damage. A big pile of shit sat in the middle of the kitchen in a puddle of pee, and it smelled really bad. She let out a loud, wet fart, but didn't notice much of a difference in the smell.

She returned to cooking her hot dogs, hoping the smell wouldn't make her lose her appetite. Evidently, it didn't, for when she was finished, she ate eight hot dogs, with mustard and relish on them, in buns. Once she was full, she downed her glass of prune juice in seconds.

Twilight picked out a book from her shelf, laid down on her bed, with her feet in the air, and started to read. It was a really fun book about scientific stuff, and it made the time go by faster. She hardly even noticed how many times she farted while reading the book.

Until, she felt another cramp in her bowels. This wasn't a fart, and she knew it. It felt more intense than the last time. Feeling a little more daring, she closed the book, forgetting to bookmark it, set it to the side, got into a squatting position in the middle of her bed, and pulled down her shorts and underwear.

PPPPPPPPPBBBBBBBLLLLRRRRRT!

Twilight felt another rush of excitement, as well as a major feeling of naughtiness, as she noisily made a big, wet mess on her bed. She would clean this up at the end of the day, and wash the sheets on the highest setting of her washing machine with extra detergent.

"Having fun yet?" said Spike.

"I... it's not as bad as you make it out to be," said Twilight as she pulled her shorts back up. Her underwear felt a lot dirtier now. She was a little uncomfortable at first, but a part of her liked the feeling.

PPPPPPFFFFFRRRRRRT!

Twilight let out another boisterous fart, and she was sure it had made her underwear even dirtier. She felt her butt, and while her panties did feel wet, there was nothing squishy between them and her butt, and she sighed in relief. She lifted her leg and farted again, giggling as the butt of her shorts became a little damp.

She moved to an armchair, and continued reading her book from there. About half an hour later, she needed to pee, so she climbed up onto the kitchen counter, pulled down her shorts and underwear, and peed into the sink.

She continued to read until Spike said he needed to go to the bathroom again. Once he came back in, he reminded her to go outside in the snow before the day was over. Twilight knew she was just putting this off, but it would have to happen eventually.

PPPPFFFFT! BRRRRRT! BBBRRRAAAP!

A series of wet farts made their way out of Twilight's butt, and she knew she would need to go to the bathroom very soon. She ran back to her bathtub, Spike following her to make sure she wasn't using the toilet. Twilight pulled down her shorts and panties and squatted over the mess she had already made in the tub.

Diarrhea exploded out of her rear, so that her first mess was completely coated in a smelly brown liquid. Some of it touched her feet as it poured toward the drain, making her wince slightly.

After about eleven seconds, Twilight finished, panting slightly. It seemed one of her hot dogs hadn't quite settled well with her.

"Can I at least clean my feet?" she asked Spike.

"Nope," said Spike.

Twilight pulled her shorts back up, and sat back on her armchair to continue reading, ignoring how dirty her feet were. She let out a few more wet farts about a minute after she picked up the book. The back of her underwear was very wet now.

When she finished reading her book, she let a few more farts, but decided to try something else. She walked over to the mess she had made in the kitchen, and farted on it for about ten seconds. She giggled at this, and then, feeling the urge to pee, she walked over to her bed, pulled her shorts and panties down, and peed all over the mess she had made on her bed.

Once she was out of her bedroom she noticed that it was about 5:00, time for supper. She cooked a heaping bowl of beans. She really loved beans, and didn't mind that they always made her gassy.

Once she had finished her dinner, and drank three big glasses of prune juice, she let loose with another flurry of wet farts. Her shorts were really starting to smell, though not nearly as bad as the rest of the house.

Twilight sat on the couch and started to watch a Daring Do movie, farting constantly.

Only half an hour into the movie did her farts start to get wetter and more boisterous. She paused the movie and stood up. Spike stood by the back door, looking directly at her. She knew what he was getting at and decided to get this over with.

She walked out into the backyard. It was now snowing again, and she started shivering within seconds. Once she was in the middle of the yard, she pulled down her shorts and her very dirty underwear. The cold air was freezing on her rear, so she decided to do this as quickly as possible.

Her eyes clenched shut, and a wet, brown mess cascaded from her butt, forming a big pile of poop under her. She quickly pulled up her shorts and ran toward the door, but tripped and fell face-first in the snow. Once she got back to her feet, she got inside and closed the door.

"Cold, isn't it?" said Spike.

Twilight nodded, still shivering, and sat back down on the couch, resuming her movie.

Ten minutes later, she needed to pee. She was still a little cold, so she decided to warm herself up. She let out a sigh of relief as she peed right where she was, on the couch. The warmth felt so good, she didn't want it to stop.

Spike heard the soft hissing sound and turned toward Twilight. "Are you peeing in your shorts?"

Twilight blushed, but giggled. She farted loud and wet before she finished, and continued watching the movie in her wet shorts, sitting on the wet spot she had made on the couch.

Once the movie was over, Twilight returned to her computer and did some more research. Her farts were louder and wetter than before.

Two hours later, at about 9:00, she needed to poop again. As she stood up, Spike said he also needed to go.

They walked into the backyard together. It was done snowing, but still cold. Twilight's damp shorts were colder on her so she walked back inside, and waited until Spike was finished. Then she ran to her basement, pulled down her shorts and panties, and noisily released the contents of her bowels all over the basement floor.

Twilight continued to do her research into the night, for she knew the "end of the day" in their deal was midnight. She farted several times, and at about 10:00, she peed, without even moving from her chair.

At 11:30, she needed to poop again. So, she walked over to a chair next to the dining table, pulled it out, pulled down her damp, smelly shorts and underwear, and released what she suspected would be the final big mess all over the chair.

She returned to her research, and before she knew it, the clock struck twelve.

"Way to go Twilight!" said Spike.

Twilight put her necklace on and telekinetically cleaned up her messes everywhere, scrubbing the spots left on the ground, carpet, and mattress while throwing her sheets in the wash.

"Aren't you gonna change?" said Spike.

"Right, I forgot." Twilight blushed. "I can wait until after the sheets are done."

"So, what'd you think about that?"

"I... I actually like using the bathroom in random spots. So from now on, when I'm at home alone, I'll go to the bathroom anywhere besides the toilet."

"And I have to go outside in the cold."

"After what I did today, you have my permission to use the house as your toilet as well."

"Awesome!"

Twilight let out a boisterous wet fart, accidentally making a big mess in her shorts. She blushed, but giggled a bit, enjoying the sensation.