Author's Notes:

I couldn't resist adding them cause I like to apply my fetishes to these two almost as much as Rainbow Dash. Again, try not to take too seriously if they seem too OoC or if the scenarios seem too unlikely or rushed, this is purely for fetish purposes

Also, you'll notice that I never use the word "plot". This is because I don't "watch the show for the plot," when I'm not in my fetish mode I like it for many other reasons first, even though I still enjoy any moment the show focuses on or does something to a female pony's rear, as it often does to Pinkie Pie and Fluttershy though not likely meant for fetish purposes.

Yes, the first part is rushed, but that's because I've already done her and it's time for the other two ponies

Applejack and Rainbow Dash met up at an empty field, Rainbow Dash wearing her sports outfit again.

"The usual?" said Rainbow Dash.

"Of course," said Applejack.

Applejack and Rainbow Dash raced around the field 10 times on foot. By the time they were done, both mares were dripping with sweat.

Applejack started rubbing Rainbow Dash's butt with her hooves. Rainbow Dash farted in Applejack's face three times, laughing at it while Applejack loved the fetish fuel. Then Rainbow Dash said she had to pee, and flew off, trying not to fly too fast. Applejack grabbed her tail and held her back. Rainbow held it in as long as she could, she thought it was more fun this way, and then wet herself, sighing in relief.

Then Pinkie Pie jumped out from a nearby bush and started laughing. "This is the funniest thing I've ever seen!"

"Pinkie Pie!" said Rainbow Dash, blushing beet red, as she was still peeing. "What are you doing here?"

"I was going for a random walk, when I suddenly heard someone farting in the distance. Farts are funny so I ran over to see who it was, and then I saw you two!"

"How much did you see?" said Rainbow Dash, who had finished peeing at that point but was sure Pinkie had seen it.

"All of it!" said Pinkie Pie. "And I think it looks really fun! Do me next!"

"Wait, what?" said Rainbow Dash.

Pinkie put on her exercise outfit, which she apparently got from nowhere, consisting of a yellow shirt and skintight teal shorts. She took out a huge barrel of soda, sprinkled something into it, and drank 20 glasses of it. Rainbow Dash didn't know where the hell she got it, but it hardly mattered to her.

"Time to race! 1 2 3 go!" She ran around the track. Applejack and Rainbow Dash ran too, both tired from the previous race. In the time it took them to run five laps, Pinkie ran 25. "Okay, we're done!" They stopped, panting, and all dripping with sweat. Applejack was right next to Rainbow Dash, who smelled of sweat and pee, but she hardly noticed, since the opportunity to apply her fetishes to another mare had presented itself.

"Well, what are you waiting for, Applejack?" said Pinkie Pie as she turned around so her rear was facing Applejack, farting loudly. Rainbow Dash laughed at this.

"All right, if you say so," said Applejack, and she began rubbing Pinkie Pie's tush. Pinkie let out a long, wet, high-pitched fart, giggling the whole time.

Rainbow couldn't help but stare. She now understood why Applejack liked this so much. Did she have a fetish for this too? Well, she didn't have a fart fetish. She just thought it was funny. She chuckled a little as she let out an airy fart.

"Hoo, what in tarnation did you eat?" said Applejack as Pinkie farted for the sixth time, just as long and loud as the previous five farts.

"I put fart powder in that soda I drank," said Pinkie. "I keep containers of fart powder stashed all over Equestria in the case of fart powder emergency."

"Uh, if you say so," said Applejack, but she was enjoying this too much to be weirded out.

Then Pinkie felt the full effects of the soda hit her. "Stop! I have to go pee!" she said. She sighed in relief as she let it all out in her skintight shorts, the pee flowing down her legs and onto the grass.

"That's not how it goes!" said Rainbow Dash. "You're supposed to make a run for the bathroom, and then Applejack pulls you back!"

"It's all right," said Applejack, who was still enjoying this. "She can do it how she wants."

Rarity walked in to see Pinkie finish peeing herself, slap her behind with her front hoof, and Applejack to start rubbing it again. And then Pinkie farted again.

"Ugh, what in Equestria are you doing?" said the prissy unicorn.

"Hi Rarity," said Pinkie unabashedly. "We're having a lot of fun! You should join us!"

"You think wetting yourself, breaking wind, and having your butt rubbed is fun?" said Rarity. "How uncouth!"

"C'mon, Rarity, try it," said Applejack.

"Never," said Rarity.

"It's more fun than it looks at first," said Rainbow Dash, blushing lightly. Rarity saw her shorts were yellow at the front for the first time.

"Well I'm not going to," said Rarity. "Unless..."

"Unless what?" said Applejack, who stopped rubbing Pinkie's butt, much to Pinkie's disappointment.

"Unless you beat me in a race," said Rarity, blushing lightly.

Applejack's heart started beating fast. Rarity had not, to the extent of her knowledge, even run a race before, while Applejack was one of the fastest runners. Why would Rarity challenge Applejack to a race she knew she would lose unless...

Rarity hoped this wouldn't be too obvious. She was curious about what all of it would be like. Of course, it wasn't as though she hadn't farted before, but she'd only do it when no one else was around.

"You're on!" said Applejack.

"Let me change into racing attire," said Rarity. Applejack smirked as Rarity ran off. She'd run both races without wearing anything, and so had Rainbow Dash and Twilight, once. She knew what Rarity was up to, and she wouldn't say a word, for fear that Rarity would back out of it.

Rarity returned wearing a light blue shirt and skintight pink shorts. By now Applejack had had time to relax. It was essential that she win this race. Rarity drank 10 mugs of Pinkie's soda. Pinkie and Rainbow Dash giggled, knowing they were about to see the ladylike unicorn do something very unladylike.

"First to five laps wins! Now... go!" Applejack and Rarity ran around the racetrack. Applejack ran as fast as she could, and so did Rarity, who wanted to make it seem as though she wanted to win. At her fastest, she couldn't catch up to the farm pony.

When Rarity reached the finish line after the fifth lap, Applejack was already there. Rarity panted, completely soaked with sweat which was now forming a puddle under her.

"No! How could this happen?" Rarity said, pretending to be horrified. "I guess you win. I must keep my end of the bargain. Not a word of this to anyone else, understand?"

Applejack, Rainbow Dash, and Pinkie Pie nodded, Pinkie doing the Pinkie Promise.

Rarity drank five more cans of Pinkie's soda, then turned around, trying to look unineterested but her heart racing as fast as Applejack's and Rainbow Dash's.

Applejack placed her hooves on Rarity's butt and started rubbing, gently at first.

Rarity liked the feeling of this. She could understand why Pinkie and Rainbow did too. "Harder, please," she said. "Don't hold back. You won fair and square."

"You got it," said Applejack and she started rubbing harder. Rarity's butt was much softer than Rainbow Dash's or Pinkie Pie's, and she loved the feeling of it against her hooves the most.

Then Rarity accidentally let out a loud, wet fart. She blushed, but got some naughty pleasure out of farting in front of three other mares, one of which was right next to her rear.

Rainbow Dash and Pinkie Pie started laughing.

Rarity could feel the pressure build up inside her. "Pinkie Pie, what did you put in this..." A loud fart made its way out of her butt, which lasted three seconds.

"Oh, not much, just some fart powder!" said Pinkie, holding in her laughter until she was finished the sentence. She fell on her back and laughed even harder, accidentally farting twice.

"Of course you did," said Rarity, a little annoyed, but still secretly enjoying this.

As Applejack continued rubbing Rarity's tush, Rarity farted again. This fart was louder and slightly deeper, and lasted five seconds.

Pinkie laughed so hard she ended up peeing herself again.

Then Rarity felt the pressure stronger than ever. She wasn't sure she could go through with this one. She tried to hold it in, which was hard with Applejack rubbing her rear.

PPPPPPPPPPPPPFFFFFFFFFFFFFFFFFFFFFFFFRRRRRRRRRRRRRRRRRRRRRRRRTTTT!

Rarity farted for 13 seconds. This fart was boisterous, wet, and deeper pitched than the last one. Rarity thought she might have made a mess in her shorts, but from the way it felt when Applejack rubbed her butt, she could tell that she didn't.

Rainbow Dash laughed so hard she wet herself this time, and Pinkie laughed harder still.

Rarity didn't fart again for another two minutes, after which she really needed to pee.

"Stop at once," said Rarity. "I need to use the bathroom."

Rarity started to walk toward the field's outhouse, trying to walk slowly so that Applejack would stop her.

Applejack grabbed Rarity's tail and held her back.

"Stop, let me go!" said Rarity, trying to pull herself free of Applejack, but not very hard.

"You're already wet, and you already farted like five times!" said Rainbow Dash. "So what's the worry?" She slapped Rarity's butt with her hoof. She waited for Rarity to yell at her, but Rarity actually liked it so she didn't respond.

Rarity couldn't just let go. Even though a part of her wanted to, it was too hard for a prissy pony like her. So she held it in for as long as she could.

The fart smell had cleared, and Applejack could smell the sweat on Rarity again. She couldn't tell who she liked more this way - Rarity or Rainbow Dash. The ladylike unicorn who usually wouldn't want to smell this way, or the tomboyish pegasus who didn't mind in the slightest.

Rarity let out a whimper as she couldn't hold it in anymore, and the floodgates opened. Her already-wet shorts grew wetter and wetter, and she sighed in relief as the pee flowed down her legs, which she secretly liked the feeling of. She blushed lightly, still feeling ashamed of wetting herself in front of three ponies.

As Rarity kept peeing, Pinkie Pie fell on her back and laughed so hard she wet herself for the third time, while Rainbow Dash couldn't help but stare, feeling aroused at the sight of Rarity peeing in her skintight shorts and enjoying it. She hoped she'd get to be in Applejack's position next time. Applejack would have her turn with her, after all, so hopefully that would be enough.

When Rarity finished peeing herself, she sighed in immense satisfaction, then blushed beet red. She let out a wet fart that lasted only one second, and giggled nervously.

Applejack took a deep breath through her nose. Rarity smelled of sweat and piss just like Pinkie Pie and Rainbow Dash did.

"We should totally do this again sometime!" said Pinkie Pie. "And we should invite Twilight and Fluttershy too!"

"Heavens no," said Rarity, not wanting any more ponies to see her like this. "Fluttershy would never agree to something like this, and I don't think Twilight would either."

"Yeah, I guess you're right," said Pinkie.

"But I... wouldn't mind doing this again," said Rarity, blushing lightly, for she had enjoyed this a great deal.

"I get Applejack's position with Rarity next time!" said Rainbow Dash. "Applejack gets me and Pinkie Pie." Applejack looked a little disappointed, so she quickly added "But you can rub Rarity's butt after she wets herself."

"Deal," said Applejack. She and Rainbow Dash spit on their hooves and did a hoof bump.