Author's Notes:

This chapter has a very short bath scene.

A week after Rainbow and Sunset's farting contest, another race was being held. Rainbow Dash, Applejack, Indigo Zap, and Lightning Dust were all competing in it, and met up at the racetrack, wearing their usual outfits.

"Howdy, girls," said Applejack. She sniffed Rainbow Dash and recoiled. Then she did the same with Lightning Dust. "Yup. You two still smell twice as bad as me!"

Rainbow and Lightning chuckled, then they sniffed Indigo and winced.

"And you still smell twice as bad as us," said Rainbow as she and Lightning Dust fanned the air with their hands.

Indigo giggled. "Hey, what do you say we take a bet as to which of us wins the race, or at least places higher?"

"As long as it's nothing too extreme, let's do it!" said Rainbow Dash.

"I'm in!" said Lightning Dust excitedly.

"No thanks," said Applejack. "It's fun racin' y'all, but at least one of you's bound to beat me."

"All right," said Indigo. "If I win, you two have to go into a closet with me for an hour. I know you two can handle it. You smell half as bad as me so I won't be AS nauseating to you."

"And if one of us wins, we have you rinse you with soapy water," said Rainbow Dash.

"Don't worry, you'll still smell at LEAST as bad as us if we don't scrub you," said Lightning Dust.

"And Lightning Dust. If one of us wins, then whichever of us loses has to wet herself in front of the other contestants."

"Deal!"

"Deal!" said Indigo.

The three smelly girls spit on their fists and did a fist bump.

Then, after drinking a full water bottle each, they all took their places at the starting line, for it was a hot summer day on July 3rd.

At the sound of the horn, they ran. Applejack was a bit behind the other three girls, who were neck in neck and occasionally one would pull ahead. Rainbow and Lightning avoided getting too close to Indigo, of course, so her smell wouldn't keep them from winning the race.

And in the end... Indigo beat Rainbow and Lightning by a nose.

"YES!" Indigo raised her fist in the air.

As the four smelly girls shook hands, dripping with sweat, Indigo said "Good game, but remember our bet!"

Rainbow Dash and Lightning Dust nodded, looking nervous.

Then Pinkie Pie and Sonata Dusk walked up to them. Pinkie's jean shorts and Sonata's pink skirt were wet.

"Go on," said Sonata. "We had a bet, remember?"

"Do I have to?" Pinkie looked very nervous.

"It was your idea cause you thought it'd be real funny!"

"Right." Pinkie gulped. "Um... Indigo Zap..." Indigo's stench reached Pinkie and she held her nose. "Can you... um... go into a closet with me for an hour? Sonata and I had a farting contest, with Twilight and Adagio as the judges, and we bet that whoever loses has to-"

"Go into a closet with me for an hour?" Indigo chuckled. "You're not the only one who lost a bet like that today."

...

Rainbow Dash, Lightning Dust, Indigo Zap, and Pinkie Pie decided to use Indigo's closet, so they went to her house, Indigo taking off her socks and shoes so that her stinky feet were exposed.

Rainbow Dash gulped. "You ready, girls?"

"Almost," said Indigo. "Just let me go to the bathroom." Without a moment's hesitation, she started to pee. "Ahhhhhhh..."

The other three girls watched the rivers of pee gushing down her athletic legs as her dirty, smelly, skintight shorts went from damp to soaking wet. A puddle formed around her feet where she stood.

"NOW I'm ready," said Indigo once she finished peeing herself. She opened the closet door. There was not much inside, and plenty of room for four people. Rainbow Dash, Lightning Dust, and Pinkie Pie walked inside first, and then Indigo stepped into the closet and closed the door.

Almost immediately, Rainbow, Lightning, and Pinkie could smell the room fill up with Indigo's odor. It was the smell of one who had not washed for a month. Indigo also never used soap when she washed, so even her rinses didn't make her smell much more pleasant. Besides, she never washed her outfit either, so it had accumulated a lot of sweat and grime, not to mention pee. And of course her butt was very dirty from never using toilet paper, even though she didn't technically mess herself.

"I don't know if I can handle this for an hour," said Pinkie, her face turning green, and wetting herself again.

"You're telling me," said Rainbow Dash. "Even I think she smells horrible!"

Indigo chuckled.

"At least you don't smell as bad as that time you farted in my face," said Lightning Dust.

Indigo sniffed her armpit. "I'm pretty sure I do. You just don't think I smell as bad because you smell as bad as Rainbow Dash. Or at least that's what Applejack said. Besides, then I made you smell my butt, which smells worse than the rest of me."

Suddenly Rainbow Dash let out a loud, wet fart. She chuckled a bit, and Pinkie Pie laughed hard.

Lightning Dust released a higher-pitched fart that was a little longer.

"Did you two just fart or were you just making fart sounds? Because I don't notice a smell," said Indigo.

Pinkie stopped laughing and sniffed. "I can't smell ANYTHING over Indigo," she said.

"Neither can I," said Rainbow.

"I can't believe I'm in this situation again," said Lightning Dust.

About half an hour in, Rainbow Dash and Lightning Dust were starting to get a little nauseous. Pinkie Pie was barely conscious, leaning against the wall in her wet shorts.

"You think maybe we should let Pinkie out?" said Rainbow Dash. "I don't think she can handle this."

"Oh, I once sat on Lemon Zest's head during a wrestling match AND farted on her for ten minutes straight. She fainted, but she was fine. Other than wetting her gym shorts, and smelling so bad she had to take a long shower. If she can handle that, Pinkie will come out of this all right. Although I have to admit, I do feel a little sorry for her."

"I'm fine," said Pinkie a little weakly, breathing through her mouth. "I put myself in this position by making this bet with Sonata, and I'll never do it again. But, I think I can stay-" She gagged. "conscious for the rest of the hour. Besides, it's nothing to that time I sniffed your butt. I survived that so I can handle this."

Indigo chuckled, remembering when Pinkie had been so foolish as to sniff her butt. She had thrown up then, and she hadn't done so today, so, she was doing well, all things considered.

Rainbow Dash fidgeted a little, but tripped over Pinkie's leg and fell forward slightly, planting her face in Indigo's armpit.

"Mmmmppph!" Rainbow Dash took one whiff and backed away, her face turning green. "Ugh, your armpits smell awful!"

Pinkie actually giggled a bit. "It's not every day you hear Rainbow Dash say that."

Indigo stretched her legs a bit, stiff from standing so long. Lightning Dust was currently sitting down, and as Indigo stretched, her foot came right in front of Lightning's face. Lightning Dust sniffed and recoiled.

"Phew!" Lightning Dust stood up, out of range of Indigo's foot. "Your feet stink WAY more than this closet does right now!"

Indigo chuckled. "Thank you!" She scratched her butt.

Once an hour was up, Indigo grabbed the handle of the closet and shook it.

"Uh-oh," said Indigo.

"What?" said Rainbow Dash and Lightning Dust.

"It won't open. We're locked in here."

"What?" said Rainbow Dash. Pinkie groaned, and Lightning Dust wet her shorts.

Indigo opened the door. "Just kidding!"

Rainbow, Lightning, and Pinkie ran out of the closet, taking deep breaths of fresh air, standing a bit clear of the foul air that was now rushing out of the closet.

"Congratulations on staying conscious the whole time," said Indigo to Pinkie. "I knew these two smelly girls would. I didn't think you could."

"Maybe I can handle it because I'm always around Dashie and Sunny farting." Pinkie giggled. "Sorry for peeing on your closet floor. Twice."

"Have you forgotten who I am? You think I haven't peed on the floor of every room in my house at least ten times? Besides, I also wet myself in that closet after all the water I drank after the race."

"Oh, I guess you're right." Pinkie sniffed herself. "Hey, I'm a smelly girl now." She giggled.

Rainbow Dash sniffed herself and recoiled slightly. "I smell a LITTLE more foul than I'd like. I'd better go rinse off, even though I wasn't going to for two more days."

"You think maybe we can stop with bets like that and just make it something like a face fart, or buying each other dinner?" said Rainbow Dash. "If anything at all?"

"Sure," said Indigo. "Although that was pretty fun."

...

Rainbow Dash ran home feeling an intense urge to pee, as the water she drank after the race had gone through her as well. She reached her house, ran into the bathroom, sat down in the shower, and started to pee, sighing of relief. She'd have to rinse her outfit anyway. It also smelled a little more than she'd prefer.

Once she finished wetting her stinky shorts, she turned the shower on and started to rinse.

When she left the shower, she sniffed herself, first her arm then her armpit, and sighed in satisfaction. She smelled exactly as she wanted to.

...

Meanwhile, Pinkie ran to Sonata's house.

"How was it?" said Sonata. "Did you faint? Did you throw up? Did you wet yourself again?"

"Only the third one," said Pinkie. "It was REALLY stinky in there, but I've smelled worse. And now I smell worse than before I went in there." She giggled at her joke.

Sonata laughed, too. She sniffed Pinkie. "P.U.! You really do smell bad! You want me to give you a bath?"

"Oooh! Sounds like fun!"

A few minutes later, Pinkie was sitting in Sonata's bathtub fully clothed while Sonata scrubbed her back with soap. Pinkie farted in the tub and Sonata laughed so hard she peed in the pink shorts she had changed into. Then she started to scrub Pinkie's butt.