Author's Notes:

Yes, the intro will be a bit rushed, but it'll get into more detail later on. Also this is my first time writing about most of the fetishes here. Again, this uses more of my dark creativity than the previous stories. You have been warned - things are about to get dirty.

Again, don't take it too seriously if the characters seem OoC or if the scenarios seem too unlikely. It's another fetish-based story.

Lightning Dust returned and challenged Rainbow Dash to a flying race a great distance, intending to prove herself the better flyer. Rainbow Dash accepted her challenge without a moment's hesitation. During the race, Rainbow Dash was wearing her Equestria Games outfit, a yellow tank top and skintight white shorts, and Lightning Dust wore a similar outfit, except her shirt was teal.

It was a close race, but Rainbow Dash won. The ponies at the finish line all cheered. Lightning Dust stormed off in a rage.

"Congratulations, Rainbow," said Applejack. Rainbow Dash was panting and sweaty, her outfit very damp. It was a hot summer day, after all. For some reason, Applejack really liked seeing Rainbow Dash like this, and the smell of the sweat on her. "Come with me to Sweet Apple Acres and I'll give you as much cider as you want."

Rainbow Dash followed Applejack to Sweet Apple Acres. Granny Smith and Big McIntosh were away on a trip, and Apple Bloom was hanging out with Sweetie Belle and Scootaloo. Applejack stacked up several barrels of cider, and Rainbow Dash poured several cups and drank them.

"Now, you up for a race around Sweet Apple Acres?" said Applejack. "Footrace. Five laps."

"You're on!" said Rainbow Dash.

"First let's do some situps," said Applejack.

Applejack and Rainbow Dash each did 15 situps. By the time it was over, Rainbow Dash was panting. Applejack gave her five more mugs of cider, and drank two herself. Then, Applejack drew a finish line at an area just outside Sweet Apple Acres.

"Now remember Rainbow Dash, don't use yer wings," said Applejack.

"I won't," said Rainbow Dash.

"Ready... set... go!" Rainbow Dash and Applejack ran as fast as they could. They were neck in neck for the whole race. After five laps, Rainbow Dash won by a nose. She and Applejack lay panting on the ground.

Applejack drank some more cider, then walked over to Rainbow Dash. Rainbow Dash was now dripping with sweat, her Equestria Games outfit completely soaked, and already a puddle of sweat was forming where she was sitting. She smelled strongly of sweat too, and Applejack liked it.

"Well, help yourself," said Applejack, pointing at the barrels of cider. As soon as Rainbow Dash caught her breath, she walked to the barrels of cider and started drinking them like there was no tomorrow.

Applejack couldn't help but stare at Rainbow Dash's butt. She had the cutest butt in all of Equestria.

Then, Rainbow Dash let out a loud, wet fart.

PPPPPFFFFFFRRRRRRT!

Rainbow Dash started laughing hard. She loved to fart, and she thought it was funny. Applejack didn't think it was funny, but something about seeing Rainbow Dash fart aroused her even more. Had she just discovered a new fetish?

"It's not funny, Rainbow Dash!" said Applejack, and before she could stop herself, she slapped Rainbow Dash's butt.

Rainbow stopped laughing. "Ow, that hurt!"

Applejack froze. She couldn't believe she had just spanked Rainbow Dash. She hoped the pegasus would forgive her.

"My butt needs a good massage to recover from that," said Rainbow Dash. "Do that and we'll call it even." She blushed lightly.

Applejack couldn't believe it. Rainbow Dash wanted her to rub her butt! Could she possibly feel the same way about her? Applejack put both her hooves on Rainbow's behind, and hesitated for a moment.

"Can you hurry it up?" said Rainbow Dash. Maybe this was a dead giveaway, but she couldn't help herself. She was really looking forward to this.

Applejack started caressing Rainbow's rear. Applejack loved the feeling of Rainbow's tush against her hooves. Her butt was soaked with sweat, but that only made it more enjoyable for Applejack.

Rainbow Dash enjoyed this just as much as Applejack. "Ahhh, that's it. Keep going."

After about 20 seconds, Rainbow Dash accidentally farted. She blushed lightly and giggled nervously. She felt no shame about farting, but this time she farted in Applejack's face and was worried that it would make Applejack stop.

Applejack could tell what Rainbow Dash was thinking. "Ah love it when you do that," she said, and she meant it.

"Oh, you do?" said Rainbow Dash, a grin spreading across her face. She raised her behind in the air, as Applejack continued to rub it.

PPPPPPPPPPPPPPFFFFFFFFFFFFTTTT!

The loudest, wettest fart yet made its way out of Dashie's butt, and lasted 10 seconds. It smelled really bad, but Applejack loved it, and started rubbing even harder. She didn't want Rainbow to tell her to stop. And Rainbow didn't want Applejack to stop.

Until about a minute later, when Rainbow felt a powerful urge to pee. She had drank more cider than she could count and it was starting to affect her. "STOP!" she said suddenly.

Applejack stopped. "Aw, did I do something wrong?" she said.

"No, I loved every second of it!" said Rainbow Dash. "But I have to pee really badly!" She had a pained expression on her face and her hooves were dancing in place. She was very uncomfortable, but had to take the few seconds to explain this to Applejack.

Rainbow Dash started to fly toward the bathroom, but stopped. She couldn't fly any farther. She turned around. Applejack was grabbing her tail with her teeth and pulling her back.

"Let me go!" said Rainbow Dash. "I REALLY need to go!"

Applejack's heart was racing. Her biggest fetish was for another mare to pee herself. Normally she'd never do this to anyone, but her other fetishes had just been satisfied and she could only think about making this one come true.

Rainbow Dash desperately tried pulling free of Applejack, but Applejack wouldn't budge. Rainbow Dash pulled harder. She really needed to go! She hadn't had to pee this badly since as long as she could remember! Her heart was also pounding, with the fear that she might not make it, even if she got free of Applejack.

Finally, Rainbow Dash could hold it in no longer. She let out a whimper as she peed in her already-wet shorts. Waterfalls of pee flowed down her legs and a puddle grew rapidly. Rainbow stood still, and Applejack released her, watching in amazement. Though she did feel a twinge of regret. This might have gone too far. She blushed beet red, both from witnessing Rainbow Dash satisfying her greatest fetish, and from shame at doing something like this to her.

Rainbow Dash also blushed, feeling ashamed beyond belief. She, Rainbow Dash, the fastest pegasus in Equestria, was wetting herself. Though now that she thought about it, she was already wet so this hardly mattered. But as she continued peeing, she realized how wonderful it felt to let go after having to pee so badly. And she also realized she actually enjoyed the feeling of peeing herself. All shame forgotten, she let out a sigh of immense satisfaction. Applejack began to relax at this. If Rainbow Dash was enjoying it, she didn't have to feel bad about it.

Rainbow Dash peed for just over a minute before she stopped, standing in a huge puddle. "Ahhh, that's better," she said.

"I'm sorry sugarcube," said Applejack. "Ah don't know what came over me."

"Don't be," said Rainbow Dash. "I really enjoyed it." She blushed lightly. She'd hate to admit this to anyone else, but she didn't want Applejack to feel bad over putting her through something that was fun for her.

"You mean it?" said Applejack.

"We should totally do it again," said Rainbow Dash.

"I'm looking forward to it," said Applejack.

"But first," said Rainbow Dash, "you didn't finish my butt massage."

Without a moment's hesitation, Applejack began rubbing Rainbow's butt again. Rainbow Dash smelled of sweat and urine, and Applejack loved it.