Author's Notes:

This version is for anyone who likes fetish fuel in lower, less ridiculous amounts, or even prefers it played in a more comical way.

The girls had just graduated from Canterlot High, and Pinkie Pie was throwing a big party at her house in celebration. The party was to start in the middle of the day and turn into a sleepover.

Twilight was the last to arrive. She was wearing her Legend of Everfree outfit, consisting of a blue T-shirt and short, tight, fairly thick purple shorts. Pinkie and Applejack were wearing short, tight jean shorts because it was a hot day. The other girls were wearing their main outfits, in Sunset's case, her second outfit of jeans.

The girls were sitting around the room making fun conversation, when Twilight felt a familiar and uncomfortable feeling. She tried to hold it in, but after a few minutes...

FFFFRRRRRRT!

Twilight accidentally farted loudly. Her eyes went wide.

"Twilight!" said Rarity, while Rainbow Dash and Pinkie Pie laughed.

Twilight blushed beet red. "I'm so sorry, Rarity. I didn't mean to."

"Oh, it's quite all right," said Rarity, seeing how embarrassed Twilight was.

"Besides, the same thing happened to me once before we met you," said Sunset, blushing lightly.

Twilight felt a bit better, more so when Rainbow and Pinkie stopped laughing, not wanting her to feel too uncomfortable. But then Twilight felt the pressure again. She tried her hardest to hold it in, standing up, and the discomfort showed clearly as she was sweating a little.

"Don't be ashamed," said Fluttershy, though she knew she'd feel differently if it was her. "Let it all out."

"Yeah!" said Pinkie. "We don't mind!"

Rarity gave Pinkie a look, but felt sympathetic to Twilight, knowing what it felt like to hold it in for extended periods of time. "Just... try not to be too loud."

Twilight stood up, stepped a bit away so the other girls wouldn't have to smell it, and let loose.

PPPPPPPFFFFFFFFFFFRRRRRRRRRRT!

A loud, wet fart made its way out of her. She blushed and giggled nervously. Rainbow and Pinkie chuckled, but tried hard to stay respectful. Twilight felt relieved the other girls weren't disgusted with her, and they continued on with their party.

Soon they had dinner. Once they were finished, Pinkie got the cake out. The table hadn't been cleaned off yet, so Pinkie set it on one of the empty chairs. Twilight was putting her plate on the counter, and then walked over to her chair and sat down.

"Twilight wait!" said Pinkie.

A squelching noise was heard, and Twilight felt something soft and wet under her rear. She stood up and gasped. She had sat on the cake, which was a chocolate cake with chocolate frosting. Twilight blushed, and Rainbow and Pinkie laughed.

"Sorry for ruining your cake, Pinkie," said Twilight sheepishly.

"It's no big deal," said Pinkie. "I've got a spare. Several, in fact. Besides, now that the cake's ruined, I can do it too!" Pinkie sat on the cake herself, wiggling her butt around in it as she giggled. "It's not so bad!"

That's just Pinkie being Pinkie, though, thought Twilight. She's allowed to be weird. But she giggled a bit, feeling better that she wasn't the only one to have a brown frosting stain on her shorts.

"What do you say we cheer her up, Dashie?" said Pinkie. "She needs a good laugh."

"I'm in," said Rainbow Dash. She and Pinkie walked over to Twilight and started tickling her.

Twilight fell on her butt, and they continued to tickle her armpits and sides, while Twilight kicked her legs in the air laughing.

"S... Stop! Hahahahahaha!"

Pinkie and Rainbow tickled harder. Twilight laughed uncontrollably, for she was very ticklish.

"HAHAHAHAHAHAHA! GIRLS, STOP! HAHAHAHAHAHAHA! I'M GONNA... HAHAHAHAHAHAHAHA!"

Pinkie and Rainbow didn't stop tickling, and in seconds, Twilight started to pee uncontrollably. She did not stop laughing, and her shorts became very soaked.

Rainbow and Pinkie stopped tickling.

"Oops... Sorry Twilight," said Rainbow.

Twilight stopped laughing. She realized she was still peeing, and blushed profusely.

"It's all right, Twilight," said Fluttershy. "It could happen to anyone."

"Especially if they're being tickled by these two," said Rarity.

"Come with me and I'll get you changed," said Pinkie.

Twilight got up and Pinkie led her to her room. Pinkie gave her a white pair of panties and a pair of skintight yellow shorts.

"And don't feel bad if you pee in them too," said Pinkie. She added with a whisper, "You wouldn't be the first."

Twilight walked into the bathroom, stripped out of her wet shorts and panties (also white, save for a yellow stain at the front and a brown stain at the back), and put on the panties and shorts Pinkie had given her. The shorts felt very tight, but she didn't want to say anything to Pinkie after she so graciously gave her a change of clothes after a humiliating accident.

Twilight rejoined the party and they continued to have fun. Pinkie stayed in her dirty jean shorts, she didn't mind having the chocolate frosting on her butt.

Eventually, Twilight decided to put on her slippers, which she had brought over. She walked over to her bag, which was in the room, and bent over to open it.

A loud ripping noise was heard, and her shorts split at the butt, exposing her white panties.

Rainbow and Pinkie laughed some more. Twilight blushed beet red.

"Oh my," said Fluttershy.

"I guess they were a size too small," said Pinkie. "I mainly only use them for diving into inflatable pools of pudding anyway."

"Sorry for ruining them," said Twilight.

"Eh, I've got lots of spares, some a little bigger," said Pinkie. "You can change into your pajamas instead. It's not like we're going anywhere before bedtime."

"Sounds good," said Twilight. "I'll go into the bathroom and change."

"Why not do it here?" said Pinkie. "Your underpants are already exposed, so what difference does it make?"

"It's not ladylike, but she does have a point," said Rarity.

Twilight pulled her shorts down so she was just in her shirt and panties. It felt a little embarrassing, but it wasn't much worse than the state she was in just now, and a little tame compared to her pee accident. She bent over to get her pajama pants out. Sunset blushed lightly, as Twilight's butt was facing her. After Twilight put her pajama pants on, she picked up the damaged shorts.

"Should I throw them in the trash?" said Twilight.

"Nah, I'll keep them around for some of my fun, messy activities," said Pinkie. "And I don't mind people seeing me in them."

Twilight chuckled a bit. It was reassuring knowing one of her friends was weirder than she could accidentally be.

The party continued without a fiasco for a while. Soon it was dark, and the rest of the girls changed into their pajamas. Twilight only had to change her T-shirt with her pajama shirt.

Afterwards, the girls were all sitting or laying on the living room floor, when Twilight felt a need to pee. "I have to go to the bathroom," she said.

"If you go in your pajamas, we won't mind," said Applejack, winking.

Twilight blushed lightly. "I don't have another change of clothes."

"That's fair. Better get goin' before you wet yourself."

Twilight ran to the bathroom. As she sat on the toilet and peed with her pants and underwear down, she actually giggled a bit at the situation she had been in earlier. It wasn't so bad after all. The girls would undoubtedly tease her more for it, but she knew it was all in good nature, and she didn't mind.

Once Twilight was done, she pulled her dry pajama pants back up, flushed the toilet, and walked back into the living room. "I made it," she said, deciding to make light of her previous accident by acting as if there was any doubt that she wouldn't wet herself again. Sure enough, the other girls giggled a bit.

She started walking toward the other girls to sit beside Sunset, who was laying on her stomach. However, Twilight tripped on a ball and fell face-first onto Sunset's butt.

Twilight paused, enjoying how soft Sunset's tush felt, like a pillow, especially in her pajamas, which showed off her rear end quite nicely. Then Twilight withdrew her head. "I'm so sorry Sunset."

"I don't mind," said Sunset. "I'm a pony, remember? And we casually slap each other's rears without batting an eye."

This was true. Twilight still had a bit of getting used to this.

They continued the party in their pajamas for about another hour, until it was time to get ready for bed.

"Make sure to go to the bathroom before bed," said Sunset.

Twilight blushed lightly but giggled. "I will."

...

The next morning, Twilight awoke. She felt her pajama pants, hoping that Rainbow Dash or Pinkie Pie hadn't made her wet the bed, and was relieved to feel that she was dry.

Of course, she also needed to pee. So she got out of her sleeping bag.

"Good morning, Twilight!" said Pinkie Pie. "How did you sleep?"

"I slept well."

"Did you wet the bed?" said Sunset, winking.

"No, but I might wet my pajamas now if I don't get to a bathroom!"

"Should we tickle her?" Rainbow whispered to Pinkie.

"Nah, let her stay dry," Pinkie whispered back.

Twilight ran to the bathroom, and exited it looking dry and relieved. "I made it," she said again.

The other girls giggled.

Twilight stayed in her pajamas as Pinkie gave her a ride home, as her only other option was to change back into her soiled shorts, which were still damp, stained brown at the butt, and smelled a little. The first thing she did when she got home was put them in her washing machine.

...

The girls would occasionally laugh about that day, especially Twilight wetting herself, but it was all in good nature, and sometimes they'd mention other embarrassing moments that they suffered as well, such as a time Rarity was taking a loud and massive dump while Applejack waited outside desperate to pee, and Rarity took so long wiping herself that Applejack wet her jean shorts. Or a time Rarity fell into the mud, which wasn't so much embarrassing as disgusting for her, but she laughed about it. Even Fluttershy giggled when they brought up the time she wet herself on a roller coaster because she had been too shy to ask to use the bathroom - a shyness she had gotten over that day.

Whenever her embarrassing day came up, Twilight would blush lightly, but also laugh about it, not feeling overly ashamed. After all, if the girls occasionally had this kind of stuff happen to them, and didn't mind in the long run, why should she?

Occasionally, a few more embarrassing events would happen to any of the girls, which Twilight got to witness if it wasn't happening to her, and they'd all laugh it off at the end of the day.