Pinkie Pie was going for a walk, as it was a beautiful summer day. She was wearing short, tight jean shorts.
After walking outside for about an hour, she was feeling a little hot, so she walked into the woods to find some shade.
She was just enjoying the slight decrease in temperature when she saw some mushrooms she had never seen before. They were brownish mushrooms with dark yellowish green spots on them.
They looked simply delicious. And, her instincts told her they weren't poisonous. So, she picked one up and ate it. It tasted about the same as any other mushroom.
She had turned around and was walking further into the woods for only ten seconds when she felt an intense pressure in her bowels like never before. Pinkie knew what it was, and, being Pinkie Pie, unabashedly let it out.
PPPPPFFFFFT!
Pinkie giggled at her fart, but it didn't stop there.
PPPPRRRRRT! FFFFFFRRRRTTTT!
Pinkie continued to giggle at her sudden gassiness. She lifted her leg and let out another loud, high-pitched fart that lasted seven seconds. Then she lifted her other leg and farted for eleven seconds.
Ten minutes later, Pinkie was still farting. She still thought it was absolutely hilarious. She had never farted this much unless she either consumed lots of fart powder or ate lots of beans. After a loud 15-second fart, she corrected herself. She had only farted this much when eating beans WITH fart powder on them.
While still standing up, Pinkie stuck her rear end out a little.
FFFFFFRRRRRRRRT!
Nine seconds later she finished farting and giggled, slapping her butt lightly. Then, she sat down with her legs spread apart and her knees raised.
BBBBBBBRRRRRRRRRRT!
Pinkie giggled more at this deep-pitched, 12-second fart. Then she got down an all fours like a pony and stuck her behind in the air, releasing a flurry of loud, high-pitched farts, ranging from one second to fifteen.
Half an hour later, Pinkie was still farting up a storm, and only now she started to wonder why she was so gassy. What had she eaten today that would make her like this? Just some eggs and cake for breakfast, and some gummy bears, and... that mysterious mushroom that had suddenly appeared out of nowhere. There was no doubt about it. The mushroom was causing her gassiness. This mushroom was ten times better at it than beans.
PPPPPFFFFFFFFFRRRRRRRRRRT! *prrrrt*
Maybe twenty times.
Make that a hundred times, she thought, once she had been farting for a whole hour straight. She had found it funny the whole time, but now she was starting to get a little concerned, for she just couldn't stop farting!
After a 17-second wet fart, she just stayed in the position with her tushie in the air, hoping her gassiness wouldn't be permanent. As funny as she thought it was, she didn't want to be farting every single moment of her life. None of the other girls except Rainbow Dash would ever want to go near her again. They especially wouldn't want to go near her rear end to give her the butt massages she liked so much, and which Rarity and Fluttershy would usually give her.
About a hundred farts later...
PPPPPRRRRRRT! "MAKE IT STOP!" BBBBBRRRRT! "I GOTTA GO PEE!" FFFFFRRRRRT! "Oops... never mind..." PPPPPFFFFT!
Eventually Pinkie lay on her side, still farting non-stop, and wishing it would just end already!
And then, after two hours total - and a countless number of farts - it did.
Pinkie was panting heavily, and sat up. She was exhausted and smelled of farts, as did the entire area around her, but her gas was gone. It seemed the mushroom only made her fart for two hours.
Now that she knew it wasn't permanent, she could enjoy it to the fullest extent! It was really funny, and to her, it was really fun to fart.
She was about to eat another mushroom, but stopped. She knew someone who loved to fart as much as she did. Someone who would also fully appreciate her newfound discovery.
...
Rainbow Dash was doing some exercises, wearing her usual skintight black shorts under her dark pink skirt, when she heard the doorbell ring. She opened the door to see Pinkie Pie.
"Hey Dashie! I got something I KNOW you're gonna love!"
"Pinkie... did you pee in your shorts?"
Pinkie blushed lightly, for she hadn't changed before heading to Rainbow's house.
"Well... yeah, but that's not important right now!"
"And what's that other smell?"
"You're about to find out!" Pinkie held out one of the mushrooms. "Try it!"
"If you say so." Rainbow ate one of the mushrooms.
Seconds later, she felt something she knew - and loved - all too well. She lifted her leg.
PPPPPRRRRRRRRRT!
Pinkie giggled, and Rainbow chuckled. Then she let out five more loud farts.
She laughed along with Pinkie after the first ten minutes. Then...
"Seriously Pinkie, what-" FFFFFRRRRRRRT! "was in that-" BBBBBRRRRRAAAAAAP! "mushroom?"
"It's an entirely new type of mushroom I discovered in the woods," said Pinkie. "It makes you fart a lot for a LONG time!"
"That's so cool!" BBBBBRRRRRRRT! "I don't think I'll need that fart powder-" PPPPPPPFFFFFFT! "again! Hey, how long does it-" PPPPPPRRRRRRRT! "last for?"
"I'll let that be a surprise," said Pinkie.
An hour later, Rainbow was damp with sweat, already hot from her workout, and now with how often and how long she was farting, and Pinkie was still laughing her butt off.
"Are you sure this-" PPPPPPPFFFFFFT! "ever wears off?"
"Cross my heart and hope to fly, stick a cupcake in my eye!"
Rainbow relaxed, then stuck her butt in the air and let out a boisterous 21-second fart. A few airy farts later, she released a deeper-pitched fart that lasted 13 seconds. Pinkie laughed so hard Rainbow thought she was going to have another accident.
Finally, Rainbow stopped farting, and she seemed a little disappointed that it was done.
"How long was I farting for?" said Rainbow Dash.
"Two hours," said Pinkie.
"This mushroom is amazing! How many of them were there?"
"They were all over the forest, and I don't think they're gonna stop growing there anytime soon! We should have a farting contest!"
"Maybe. But, why don't we use them for pranks first?"
"Oooh, sounds fun! But promise me you won't give them to Fluttershy, or fart in front of her, or make me or anyone else fart in front of her."
"Cross my heart and hope to fly, stick a cupcake in my eye. Now, who should we prank first?"
Pinkie was so excited she peed a little more.