Author's Notes:

Another requested chapter, as usual

Also as usual, will be extremely disgusting to anyone without the fetishes, so if it offends or disgusts you, please ignore it

Twilight Sparkle and Sunset Shimmer were having a sleepover. Twilight was wearing pair of short, skintight purple shorts (though her other pair had cleaned up rather nicely after her first session and all those that followed), and Sunset was wearing equally short, gray shorts.

Currently, they were playing Truth or Dare.

"Twily, truth or dare?" said Sunset.

"Dare," said Twilight.

"I dare you to tell me your biggest secret."

"Can't you dare me to do anything else?"

"This is your dare."

"Well... I kind of like to use my house as a bathroom when no one's around. Except Spike." Twilight blushed.

Sunset was a bit interested at this. "I dare you to show me how you do it."

FFFFFFRRRRRRRRRT

Twilight blushed more. She had had a big bowl of beans and some hot dogs for dinner tonight, so she was really gassy. Sunset giggled a bit, feeling a little aroused.

It wasn't long before Twilight had to poop. She led Sunset downstairs, pulled down her shorts and panties, and when starting to squat down, she farted in Sunset's face.

Sunset giggled and positioned her butt in front of Twilight's face.

PPPPPPPPPFFFFFFFFFT

Twilight felt a little less embarrassed at this, and as she stood there, ready to take a dump, Sunset spoke.

"I have a fart fetish, so I really like it when you fart." She blushed a little. "Also, in Equestria, public pooping is very common." She pulled down her shorts and panties. "Do you mind if I join you, Twily?"

"Not at all! Go right ahead, Sunny!"

After Twilight and Sunset had released the contents of their bowels on the basement floor, they walked upstairs. Twilight farted several times along the way.

"What did you eat, a lot of beans?" said Sunset.

"Yes," said Twilight. She let out another wet fart.

"Do you have any more? We should have a farting contest!"

"Great idea, Sunny!"

Twilight cooked several big bowls of beans, and poured big glasses of prune juice. Sunset couldn't wait until they took effect.

Once they'd wolfed down all the beans and guzzled down several glasses of prune juice, they were ready to have their farting contest.

Twilight was still really gassy from her last meal. She wanted to wait until Sunset was gassy, but she couldn't hold it. She accidentally released a loud, wet fart that lasted seven seconds.

"Nice one, Twily," said Sunset, who wasn't offended that Twilight had started earlier. "I'll see if I can top it."

After about ten minutes, Sunset was feeling the effects of the beans. "Here we go!"

BBBBBBBBBRRRRRRRRRRRAAAAAP

Sunset's fart was deeper-pitched than Twilight's and lasted eight seconds.

"Finally," said Twilight, who felt like she was about to explode.

PPPPPPPPPPPFFFFFFFFFFFFFFRRRRRRRRRRRT

Twilight's fart was very wet and eleven seconds long.

Sunset waited a bit, and let out another boisterous fart which was only ten seconds.

"Phew, your farts are stinkier than mine!" said Twilight.

"That must be because I'm part pony," said Sunset.

Spike walked in. "Hey, what's going on?"

"Oh, here's an idea!" said Twilight. "Let's take turns doing this!" She positioned her rear in front of Spike's face.

PPPPPPPRRRRRRRRRRT

Twilight giggled while Spike coughed. "I always do that when it's just us here."

"If you say so." Sunset positioned her behind in Spike's face.

FFFFFFFUUUUUUUUURRRRP

Sunset giggled, feeling extremely aroused at farting in someone's face.

They took turns farting in Spike's face for about a minute.

"Stop!" said Twilight. "I really need to pee!"

She ran over to the sink and pulled down her shorts, but left her underwear up. She sighed in relief as her red panties darkened, and pee flowed through them into the sink. She let out a short but loud fart in the middle of peeing.

Sunset stared. This was just as arousing as the farting. She forgot that she also needed to pee as well, and spontaneously peed a little, dampening her shorts.

Once Twilight finished peeing, she pulled her shorts back up, which became a little damp as they were tight and were pressing right against her soaked panties.

"How many other places do you pee on?" said Sunset.

"Just about anywhere," said Twilight. "It's easy to clean up if someone's coming over. You couldn't even tell I peed on the carpets, couches, and bed, could you Sunny?"

"All right," said Sunset. She pulled down her shorts, squatted down, and peed through her dark red panties all over the floor. She really liked the feeling and could see why Twily enjoyed it so much.

Once Sunset was finished, she pulled her shorts back up, and she and Twilight continued their farting contest, their farts wetter than before.

In the end, it was Sunset who won with a boisterous 18-second fart.

Twilight, whose longest fart was 15 seconds, let out another boisterous, wet fart.

"I think I farted TOO hard... said Twilight, blushing a little.

Sunset walked behind Twilight to inspect the damage. There was a brown stain on the butt of her shorts, but no bulge.

"Don't worry Twily, it's not too bad."

Then, the severe urge to poop hit them both.

"Come with me," said Twilight, and she led her to her bedroom, and they got onto her bed.

"Have you done this before?" said Sunset.

"Several times," said Twilight. "Sometimes I don't even change the sheets before I go to sleep. But when I have to, it's easy to clean."

"All right," said Sunset, who felt extremely aroused.

Both girls pulled down their shorts and underwear.

PPPPPPPBBBBBLLLLLLLLLTTTTTTTTTH

They sighed in relief as a wet brown mess noisily cascaded out of their butts onto Twilight's bed. They pulled their shorts back up. Sunset farted loudly, and giggled.

"Sometimes when I wake up, I have to poop really bad, but I don't really feel like getting up, so I just let it all out in my PJ's," said Twilight. "And I pee in them all the time. Only when I'm awake."

"I'd really like to try it sometime," said Sunset.

They started watching a movie on the couch, farting constantly. At three times they had to poop, so they did so in the middle of the kitchen floor, in the bathtub, and to the side of the couch on the living room floor. Their panties were very dirty and wet but they liked it.

Near the end of the movie, Twilight and Sunset had to pee, so they just let it all out in their shorts, giggling the entire time.

Once the movie was over, they continued to have fun, pooping on the floor one more time, before they got tired. Rather than change into their pajamas, they stayed in their dirty, smelly shorts and slept in Twilight's bed. The smell didn't bother them, and they fell asleep within minutes.

The next morning, Twilight awoke, and tapped Sunset. Sunset also woke up.

"Sunny... I have to poop really bad," said Twilight. "Do you?"

Sunset nodded.

Twilight released a wet, brown, smelly mess into her shorts, while peeing at the same time, and giggling. Sunset grinned, and also emptied her bowels and bladder into her shorts.

They sat in their messy state for a while, and then they showered, cleaning up and changing into their usual dresses. Twilight also used her magic and cleaner to clean up the messes they had made, and when she was done, the house was spotless. Sunset was very impressed, and she couldn't wait to have another session with Twilight!