Author's Notes:

Semi-requested. I was requested to do a story about her, and I did, but I wanted to do this chapter, both because I liked the concept and I wanted to give another gift to a friend and supporter.

Also this chapter contains a bath scene.

It was now early fall. It wasn't hot anymore, but it was still warm enough for Rainbow Dash to wear her usual outfit without a warm coat or a pair of sweat pants.

As such, Rainbow wasn't sweating as much, but she still smelled bad, even when she had rinsed in the shower 12 days ago.

She was sitting on the couch after a date with Cherry, and was just drinking a soda when she heard a knock on the door. She opened it. In the doorway stood an unfamiliar girl with peach skin, dark blue hair, a dark purple T-shirt, and a pair of black compression shorts very similar to Rainbow Dash's.

"Rainbow Dash!" said the girl. "I'm Indigo Zap! I've seen all the races and soccer games and other competitions you've won. You're quite an athlete!"

"Yes, it's all true!" Rainbow sniffed. "Ugh, what's that smell? There's no way that's me!"

"It's definitely me," said Indigo. "I don't wash much, not even after an exercise."

"How often do you wash?"

"At most, once a month. Without soap or shampoo." She scratched her head, and Rainbow could see some dandruff flakes fall out.

"Whoa. Even I rinse off twice a month, and I wash my hair. Trust me, your head's really itchy cause you're not washing your hair."

"I didn't come here to get lessons on how to wash! I came here to challenge you!"

"To what? A contest of who can smell the worst? Cause you've got me beat there!"

Indigo chuckled. "No, to a contest of sports!"

"Which sports?"

"Racing, soccer, volleyball, and wrestling."

"You're on!"

Rainbow and Indigo spit on their hands and did a high five. Rainbow farted, and she and Indigo chuckled.

...

They met at the racetrack, with Sunset Shimmer and Pinkie Pie keeping score.

"Phew," said Sunset as Indigo walked by her while Pinkie held her nose. "You smell worse than Rainbow Dash."

Indigo chuckled. She took pride in her smell.

Sunset was gassy today, so she let out a silent fart. Indigo didn't smell it. Her own smell drowned out the stench of Sunset's farts.

"How many laps you want to run?" said Rainbow as she stretched, reaching into her bag for a bottle of water.

"Ten laps," said Indigo.

"Fine with me!"

"I hope you're not too surprised when you lose a race for the first time. Oh, and to make things more interesting, let's take a bet."

"As long as I don't have to be as clean as Rarity for several days in a row."

"Not quite. The winner will give the loser a bath."

"That'll be fun. I guess I'd better win then." She shook Indigo's hand, then they walked to the start of the racetrack.

"Ready... set... go!" said Pinkie.

They ran. Rainbow would usually be in the lead. Whenever she was in a race, the other racers' primary objective would be to place second, which had a handsome prize as well. Their secondary objective of course would be to not run directly behind Rainbow Dash, as her smell would blow in their direction.

However, Rainbow saw Indigo was neck in neck with her. So far, only Applejack had come close to beating her in a race, so Rainbow wasn't used to this.

It didn't take very long to finish a lap, but occasionally one would pull ahead for a bit.

As they were on their last lap, Rainbow ran even faster. She pulled ahead of Indigo. Indigo tried as hard as she could to catch up, but couldn't. Rainbow Dash crossed the finish line first.

"Rainbow Dash wins!" said Pinkie Pie.

"Wow, you're pretty fast," said Rainbow, panting and reaching out to shake her hand.

"Don't get cocky just cause you won," said Indigo, catching her breath. "I'll kick your ass at soccer!"

First they drank a few water bottles, as they were sweating quite a bit from the race. Then, they walked to the soccer field.

"First to ten goals wins," said Indigo.

"Ready... Begin!"

Rainbow kicked the ball. Indigo ran after her and stole the ball. As Rainbow ran after Indigo, Sunset and Pinkie watched, keeping track of the score, and Sunset farting as silently as possible. Every time one girl scored, the other would quickly catch up.

After an intense game, the score was 9-9. Rainbow and Indigo tried hard to keep the other from scoring.

Then, Indigo got the ball and ran toward Rainbow's net. Rainbow tried to tackle her, but she moved out of the way causing Rainbow to fall on her face, accidentally farting loudly. Indigo scored.

"Indigo Zap wins!" said Pinkie. "Uh... sorry Rainbow Dash."

"Looks like we're tied now," said Indigo as Rainbow Dash stood up.

"I'll still win the next two competitions!"

"Dream on! I'm gonna win!"

They both drank a few more bottles of water.

"I gotta pee," said Rainbow Dash.

"Me too," said Indigo Zap.

Rainbow looked around and saw a tree. She was about to run for it when she heard a soft hissing sound. She turned around.

"Ahhhhh," sighed Indigo with a look of relief on her face.

"Are you..."

"Yeah! I do it just about every time! It's so much more convenient than finding a bathroom." She chuckled. "It was so funny the first time Sunny Flare had to clean the car. Now she has me sit on a towel whenever we all go for a drive."

"Do you... mess in your shorts as well?"

"I'm not THAT gross. That I do in the toilet. But I don't use toilet paper." She finished and scratched her very dirty butt.

"That could be one of the reasons you smell so much worse than me." Rainbow chuckled, and ran towards the tree.

"Don't worry, it's not that unusual," said Pinkie. "A lot of the time when someone farts, I laugh so hard-"

"Who said I find it unusual?" said Indigo unabashedly.

Rainbow Dash returned, her shorts only damp with sweat. "Time for volleyball!"

...

They arrived at the beach with a volleyball, and walked over to the volleyball net.

"First to ten points wins!" said Indigo Zap. "I'll serve first."

Indigo served the ball, and Rainbow Dash hit it back.

They hit it back and forth, and occasionally one of them would spike the ball. Rainbow Dash always scored when she did this, but sometimes Indigo would score too.

Nevertheless, Rainbow Dash won 10-7.

"Damn it!" said Indigo. "Now you're in the lead again!"

"Once I beat you at wrestling, I'll win the competition!"

"You wish. I hope you're ready to smell clean, Rainbow Dash!"

The two smelly girls walked to a section of grass near the beach, brushing off the sand from their games.

"Let me guess," said Rainbow Dash. "Whoever stays down for ten counts wins."

"You got that right!"

"And, begin!" said Pinkie.

Rainbow and Indigo began wrestling. The competition was fierce, but then Indigo put her armpit in Rainbow's face. Rainbow recoiled, and Indigo got her to the ground and sat on her butt, farting loudly and holding her arm behind her back.

"Wow, she must REALLY smell bad to have that effect on Rainbow Dash." Pinkie giggled.

Sunset counted to 10. "Indigo Zap wins."

Indigo stood up. "Ha! I'm a WAY better wrestler than you!"

"That was cheap!" said Rainbow Dash as she got up. Her butt felt dirtier than before the wrestling.

"I thought you could handle it!" Indigo chuckled. "It's hard to tell but I think you smell pretty bad too. You're the first person I did that to that didn't faint. Lemon Zest even wet herself."

"Looks like we're tied. What's the tiebreaker?"

"I didn't really think of one. It never occurred to me that I'd lose two of the matches. How about a holding contest?"

"No. I wouldn't feel right winning that way."

"Why not? I told you I go in my shorts all the time!"

"That's just it. I'm accustomed to holding it for long periods of time. You're quite obviously not. I'd win easily."

"Ouch! I never thought about that."

"How about a farting contest instead?"

"Do you really think you stand a chance against me? Before I graduated from Crystal Prep I was the farting contest champion!"

"They had farting contests at your school?" Rainbow was jealous. "How come we never had any at Canterlot High?"

"Maybe my school's just better."

"Let's do it at my house!" said Pinkie. "Not only will it be really really REALLY funny, but I've got lots of fart powder and beans! And I've got lots of soap and shampoo for when Rainbow Dash gives you a bath!"

"I'm pretty sure Rainbow Dash is gonna be the one in your tub," said Indigo. "Don't wet yourself when she farts in the tub!"

"Oh, I'll probably wet myself before that!" giggled Pinkie.

Indigo kind of liked another girl being unashamed of it.

...

Once at Pinkie's house, Pinkie cooked some beans and sprinkled large amounts of fart powder on them. Once Indigo started stinking up the house, Pinkie opened the windows to air out the room.

"Wow, no one had to do that for an entire house with me," said Rainbow Dash.

"You smell like flowers compared to her," said Pinkie.

"Thanks," said Indigo, very flattered.

They ate their beans, and waited.

"Ready to take a bath?" said Indigo Zap.

"You're way in over your head," said Rainbow Dash. "But, may the best farter win." She held out her hand for Indigo to shake.

"I plan to."

Only a few minutes later, they started to feel gassy.

"Sunset, you might want to keep score," said Rainbow Dash. "I don't think Pinkie will be able to focus."

"I can time my own farts!" said Indigo.

"Yeah, but she'll write down our longest farts. And, just to be safe, hold it it when I'm farting. And I'll hold it in while you're farting. Otherwise it'll be hard to tell."

"Sure. More time for my farts to get longer. We are going by length, right? Even I think it'd be unfair to go by smell cause I'd win by a landside!"

"Yeah, and if you're that good at farting we'll probably be equally loud."

"Well, you start!"

Rainbow lifted her leg.

PPPPPPPFFFFFFFFFFTTTTT!

Her fart was loud, explosive, and a little wet.

Pinkie started to laugh, and Sunset wrote the number 7 under Rainbow Dash's name, for how many seconds the fart lasted for.

"Let me show you how it's done." Indigo lifted her leg.

PPPPPPPPRRRRRRRRRRRRT!

After an equally loud fart, Indigo sighed, gave Rainbow Dash a smug look, and glanced at Sunset as she wrote the number 8 under Indigo's name. The same number Indigo had counted.

At first their farts didn't get much longer than this, but were equally loud, though none of them smelled worse than Indigo. Pinkie laughed her butt off the whole time.

"All right, I think the warmup's done," said Rainbow Dash. "I can feel a big one coming."

BBBBBBBBBRRRRRRRRRRAAAAAAAAAAP!

Indigo was quite impressed by how loud this boisterous fart was, while still being long. Pinkie wet her jean shorts from laughing too hard before Rainbow was done farting.

Sunset crossed off the number 8 under Rainbow's name and replaced it with the number 14.

"Wait till you hear what I can do!" said Indigo.

BBBBBBBBBBBBBBRRRRRRRRRRRRRRRT!

Rainbow had never heard anyone besides herself fart this loud or for this long. Not even Pinkie on fart powder or Rarity on their dare. Except Sunset, but she was a pony so she didn't count. Rainbow liked this competition.

While farting silently, Sunset wrote Indigo's high score as 15 seconds.

They continued to take turns farting, and soon Rainbow's longest fart was 17 seconds, and Indigo's was 18. For about twenty minutes, their farts didn't get much longer than that. Sometimes their farts were deeper-pitched, and sometimes they were wetter. All of their farts were loud and smelled as bad as they did.

Then Indigo felt an intense pressure. "I think this one's gonna be my highest score for the entire contest!"

PPPPPPPPPPPPPPPPPPFFFFFFFFFFFFFFFFFRRRRRRRRRRRRRRRRRRRRT!

Rainbow felt very nervous as this fart went on for very long. She had a hard time holding it in herself. Pinkie Pie was kicking her legs in the air, tears streaming down her face from her hysterical laughter.

"31 seconds," said Indigo, slapping her butt in a taunting way. "That breaks my record when I became champion at Crystal Prep! Let's see you top THAT, Rainbow Dash!"

"With pleasure." Rainbow stuck her behind out a little.

BBBBBRRRRRRRRRAAAAAAAAAAAAAAAAPPPPPPFFFFFFFFRRRRRRRRRRRRRT!

Indigo's eyes went wide as Rainbow unleashed one of the loudest, wettest, most explosive farts of her life. Pinkie rolled on the floor (and in her puddle) laughing even harder, and Rainbow put her hand on her butt, feeling relieved that her shorts were dry, aside from the sweat.

"Did I time that right?" said Rainbow Dash once she was done.

"If you think it was 33 seconds, you're right," said Sunset, writing it down.

"I can still do better!" said Indigo.

Their farting contest lasted another ten minutes, during which neither of them farted longer than 15 seconds until they ran out of gas.

"I win!" Rainbow raised her fist in the air.

"Congratulations, Rainbow Dash," said Sunset.

Pinkie was panting heavily, trying to catch her breath from laughing so hard during the contest.

"No!" said Indigo Zap. "How could I lose? I've never lost a farting contest before!"

"Hey, you still did pretty good," said Rainbow. "You're the second girl who's even come close to beating me."

Sunset blushed lightly, for she was the first. Because she knew Rainbow Dash loved to fart, on multiple occasions she decided to have fun with her gassiness and have farting contests with Rainbow. Even with Rainbow taking fart powder with beans when Sunset didn't, it had been close, though Rainbow Dash always won.

Indigo sat down and started to pout.

"Bathtime for Indigo Zap!" Rainbow Dash picked her up. Indigo squirmed as Rainbow Dash took her to Pinkie's bathtub. Pinkie and Sunset followed her.

"Don't put the plug in just yet," said Rainbow. "I'll need to give her a good rinse before the bath!"

Rainbow threw Indigo into the empty tub. Indigo tried to climb out but Pinkie held her in place, keeping her in a sitting position.

"Do it, Rainbow! And don't worry about how wet I'll get. I don't mind. I need to wash anyway!"

Rainbow took the shower head and rinsed Indigo thoroughly for a few minutes while Pinkie held her still. The water on the floor of the tub looked brown as it went down the drain.

She turned off the shower head. Indigo was completely soaked. So was Pinkie, who sniffed Indigo. "Not even close to smelling clean."

"That's what the actual bath is for," said Rainbow, and she filled the tub with warm, soapy water. Pinkie remained in the tub to hold Indigo, though Indigo wasn't resisting as much anymore.

"You have any idea how long it took to smell like that?" said Indigo.

"Even I set limits on that," said Rainbow. "And I take a lot of pride in my smell. But even my boyfriend wouldn't want to go near me if I smelled as bad as you. And he's into girls who smell bad. I'd wash twice a month, and wash my hair. And maybe change your bathroom habits a bit."

"I'll smell how I want."

"Suit yourself. I won't stop you." Once the tub was full, Rainbow took a dollop of shampoo and started lathering Indigo's hair. "Tell me my hair wasn't this greasy."

"Probably slightly less," said Sunset, letting out a long, silent fart.

"This will feel much better," said Rainbow, "and it'll make your itchy dandruff go away. Do everything else the way you used to, but I'd REALLY recommend washing your hair with shampoo when you shower, and on a regular basis, wash your hair. There's even a dry shampoo you can use. That's what I do."

Indigo had to admit, she did like the feeling of her hair being washed, and it did seem to help with her itchy head.

Then, Rainbow scrubbed Indigo's armpits. "Try winning a wrestling match without your stinky armpits."

"I could still kick your ass without them!"

"We could have a rematch in the backyard once the bath is done. I'd like that. And I'll try not to put my armpits in your face."

"Do it if you want. I USED to smell worse than you, remember."

Once Rainbow was sure the smell had been washed off her left armpit, she started to scrub her right. Indigo sighed as she was starting to smell clean.

"Let me help!" Still sitting in the tub, Pinkie took a sponge and started to scrub Indigo's back.

"Thanks," said Rainbow Dash. "Her armpits will take a while."

Once Indigo's armpits were clean, Rainbow bent her on all fours and started scrubbing her butt, covering it in suds.

"Hey!" said Indigo. "I take great pride in my dirty ass!" Although, unlike Rainbow when she was in her position, Indigo seemed to like the feeling of her butt being scrubbed.

"Ugh," said Rainbow, scrubbing more vigorously while Pinkie joined in. "Your rump smells worse than your armpits, and I'm not even that close to it! If Sunset's face was right next to it she'd probably faint. And she's used to some pretty bad smells."

Sunset blushed again as she let out another silent but deadly fart.

Once Indigo's butt and shorts were clean, Rainbow and Pinkie each scrubbed one of her legs. Then, Rainbow had Indigo sit back down and lift her feet up so she could wash them. Indigo wasn't ticklish, so this was easy.

Then, Rainbow rinsed Indigo's hair with the shower head. "All done," she said, draining the tub water.

Indigo stood up, soaking wet and smelling very clean.

"It's funny, me giving someone a bath not once but twice," said Rainbow Dash.

"Who else did you give a bath?" said Indigo.

"Someone. She told me not to tell anyone." Rainbow had so far kept her word and only told Cherry about Rarity's bath.

"Whatever." Indigo sniffed her armpit. "It'll take forever to smell like that again."

"With you, I very much doubt it." Rainbow chuckled, and so did Indigo.

"Hey, my head isn't itchy anymore."

"I told you."

"Fine, I'll use shampoo from now on. But, I won't shower again until a month from today! And I'll-"

"Yes, I know. If you want to smell twice as bad as me, be my guest. But, it was pretty fun doing those competitions with you. And you still won two of them."

"Maybe we could try it again. Without the bet."

"You're on!"

"First let's wrestle in the backyard."

Rainbow Dash won.