Author's Notes:

Semi-requested. Someone wanted another "enclosed space" story. Also, I'm feeling a bit burned out in writing fetish stories especially for this one so this might be a bit repetitive or slightly lower quality.

Rainbow Dash, Rarity, Pinkie Pie, Fluttershy, Applejack, Sunset Shimmer, Twilight Sparkle, and Wallflower Blush were having a sleepover at Rarity's house on Friday, August 5th. Rarity sprayed air freshener around the room to make sure she wouldn't have to put up with Rainbow Dash and Applejack's smell.

"Who's looking forward to our bus ride tomorrow?" said Rainbow Dash.

The other girls all agreed in unison. The day Sunny Flare had rinsed in Applejack's shower, Rainbow Dash had bought a bus off two businessmen, which was big enough for all the girls. Tomorrow all the girls would be able to go for the ride except Indigo Zap, who was away in another city competing in a cycling competition, a volleyball tournament, and a farting contest. They would have liked her to come; She would have gotten a seat of her own, and as long as the windows were open and Rarity had her air freshener, no one would notice her smell.

...

The next morning, the girls met up at Rainbow Dash's house. Her bus was a little on the small side, with four seats on each side.

Rainbow Dash, of course, was driving. On the seat behind her sat Lightning Dust and Applejack. Lightning Dust sat by the window. Behind them sat Adagio Dazzle and Sunny Flare, sharing the same seat because if either of them wet themselves, the other wouldn't mind. Pinkie Pie and Sonata Dusk sat behind them. Sunset and Twilight sat in the front seat on the right side. Sunset sat by the window in case she farted during the ride. Behind them sat Fluttershy and Wallflower. Wallflower had already wet her pants on her morning pee and sat by the window so if Fluttershy needed to go she could do so easily. Behind them sat Aria and Rarity. Rarity sat by the window.

"Let's hit the road!" said Rainbow Dash as she closed the bus door, and they began driving.

Rarity tried to open her window. To her dismay, it wouldn't open. She reached into her purse to pull out her air freshener.

"Oh no! I left my air freshener at home during our sleepover! Can everyone else open their windows?"

Rainbow Dash, Lightning Dust, Sunny Flare, Pinkie Pie, Sunset, and Wallflower tried to open their windows. They wouldn't open either. The girls all made negative sounds.

"Are you kidding me?" said Rainbow Dash. "ALL the windows on this bus are broken?"

It wasn't long before the inside of the bus started to smell bad, from Rainbow Dash, Lightning Dust, Applejack, Sunny, and Adagio. Rainbow Dash didn't mind, but she was uncomfortable at how unpleasant this must be for her friends.

Twilight, Fluttershy, Rarity, Wallflower, and Aria held their noses and breathed through their mouths at the first whiff of the smelly girls. Even Rarity's perfume was drowned out by it.

"Sorry about the smell," Rainbow Dash said nervously.

"Oh, it's... quite all right, Rainbow," said Rarity. She accidentally took another breath through her nose and cringed. "It's my fault for forgetting my air freshener."

"And whoever sold you this bus with broken windows," said Aria bitterly. "But it could be worse. At least no one's-"

Sunset, Lightning Dust, and Sunny groaned.

"What is it?" said Rarity, dreading the answer.

"This is one of those times," said Sunset.

"And Lightning Dust and I sprinkled our cereal with fart powder this morning," said Sunny.

"I had beans for breakfast," said Rainbow Dash. "But I don't-" She felt a gurgling in her stomach and a pressure in her bowels. "Never mind... I'm feeling it too."

"Oh, please try not to break wind in this bus," said Rarity. "It smells dreadful enough already!"

"I'll try," said Sunset.

"I didn't think we wouldn't have air freshener or windows that didn't open," said Rainbow Dash apologetically.

Twenty minutes into the drive, during which most of the girls were already disgusted by the smell, Sunset couldn't hold it any longer.

PPPPPPPFFFFFFFFFFFFFFFT!

Sunset sighed in relief, then giggled nervously.

Sunny let out an equally loud, long fart. Lightning Dust farted just as long but a little higher-pitched. Rainbow Dash farted deeper-pitched and slightly shorter.

Twilight, Fluttershy, Rarity, Wallflower, and Aria took one whiff of the bus, which now smelled worse than before. Aria vomited over the side of her seat, which Rarity couldn't blame her for. Even Applejack, Adagio, and Sunny were beginning to feel overpowered by the stench. Pinkie and Sonata didn't notice it yet because they were too busy laughing. Pee was pouring off the edge of their seat, and Pinkie's shorts and Sonata's skirt were soaked.

"Sorry for peeing all over the seat of your bus, Dashie," said Pinkie.

"Don't worry about it," said Rainbow Dash. "Even if I cared what you did to your seat, I'm not keeping this bus. I'm taking it back and getting one whose windows work."

"Well in that case," said Sunny. "Adagio, did you take your morning pee?"

"Not yet," said Adagio.

"Neither did I."

Both smelly girls sighed as they started to pee, enjoying the warm wetness on their crotches and butts as their seats became soaked.

"The pee smell won't be an issue, will it?" said Adagio, looking concerned.

"I don't mind the pee smell." Rarity took another whiff and her face turned green. "Besides, between the smelly girls and the fart smell, only Indigo Zap could make the inside of this bus smell any worse."

Pinkie and Sonata took a whiff, noticing how bad the area smelled for the first time, and held their noses. They were used to fart smells, but usually had windows open during farting contests.

Until Rainbow Dash, Sunset, Sunny, and Lightning Dust continued to let loose with a series of short, loud, and in some cases, wet farts, causing Pinkie and Sonata to laugh harder.

Rarity was taking care to breathe through her mouth, but there was one good thing about the smell. She let out a silent fart. The bus already smelled so bad no one was able to tell it was her. Even Aria, who was nearest to her, didn't notice.

"Ugh, when are we gonna stop?" said Applejack twenty more minutes later. "Ah can handle bad smells, but this is the second worst thing I've smelled after Indigo Zap."

"It's not that bad," said Rainbow Dash, for she and Lightning Dust smelled worse than the farts. "But there's a gas station about twenty minutes away. We can air out the bus there. And maybe break the windows so it doesn't smell as bad on the way back."

Wallflower noticed Fluttershy fidgeting. "Do you need to go to the bathroom?" she said.

"Yes," said Fluttershy. She didn't even blush, since she hardly felt embarrassed when she wet herself anymore. "If we're stopping at the gas station anyway, I can wait until then. Um... does anyone else have to go?"

"I do," said Aria, who was holding herself. "I haven't pissed all day!"

"I did," said Rainbow Dash. "But I drank lots of cider and coffee with breakfast, and I really gotta go too!"

"I knew I was forgetting something this morning!" said Twilight, who suddenly realized her need to pee and crossed her legs.

"I hope you make it," said Sunset, "but if you wet yourself next to me, I won't be disgusted."

"Do try to hold it until we reach the gas station, Aria," said Rarity.

"I'll try," said Aria.

Twenty smelly minutes went by, which were more uncomfortable for Fluttershy, Aria, Rainbow Dash, and Twilight than the others, for with each minute their need to pee grew worse. Rainbow tried not to fart to avoid wetting herself, but occasionally a fart would force its way out of her, while Sunset, Sunny, and Lightning continued to fart repeatedly.

After what seemed like hours, they finally reached the gas station. Rainbow Dash opened the door of the bus, and she, Aria, and Twilight raced out, Fluttershy walking after them, wanting to let them go first, depending on how many stalls were in the bathroom.

Being the fastest, Rainbow Dash reached the gas station's bathroom door first. It had an Out of Order sign on it.

"Gas station bathrooms being out of order are an accessory to wetting!" said Rainbow Dash. "I should just wet myself here to make a point. But I'll try to hold it till I get back."

Fluttershy walked up to them just as they turned around. "That was fast," she said. "Or... is it..."

"Out of order," said Aria. "We'll have to hold it till we get back."

"I don't think I can," said Twilight.

"All right, we'll turn the bus around and head back home," said Rainbow Dash. "I'll skip breaking the windows and hope we can put up with the smell."

They got back on the bus, and Rainbow drove back the way they had came. As the minutes went by, the bus started to smell again, though at least Rainbow, Sunset, Sunny, and Lightning weren't farting anymore. Rainbow, Fluttershy, Twilight, and Aria fidgeted harder. All but Rainbow held themselves and crossed their legs.

Twenty minutes into the drive home, Fluttershy let out a squeak as she leaked into her panties.

"If you don't make it, try to enjoy the warm release as best you can," advised Wallflower.

Fluttershy felt a little better, remembering Wallflower's jeans were still damp and she'd hardly be the only one today. She kept trying to hold it, but a few leaks later, the dam burst, and Fluttershy peed full force. She blushed lightly, but remembered Wallflower's advice and sighed in relief. Her skirt and panties were soaked, but she didn't mind it as much as she used to.

Her puddle reached Wallflower's butt. Wallflower found this enjoyable. She started to pee again even though she didn't really have to go very bad.

"That wasn't so bad." Fluttershy giggled.

"That's good," said Wallflower, who would hate to see Fluttershy humiliated.

Fluttershy sat in her wet dress as the ride continued, with Rainbow Dash, Aria, and Twilight becoming more and more desperate. It didn't help Aria and Twilight that the bus was full of the stench of the smelly girls, though at least the fart smell was gone.

"Only five minutes till we get there!" said Rainbow Dash after what seemed like forever. "And not a moment too soon." She could feel the pee sloshing around in her as she fidgeted.

"You can say that again," said Rarity, still trying to avoid breathing through her nose.

Twilight groaned. Her shorts were already damp from leaking a few times over the past five minutes.

"Are you all right, Twilight?" said Sunset.

"I can't... stop it..."

Twilight's shorts grew wetter and wetter. Pee dripped off the edge of her seat, forming a puddle under her and Sunset, wetting the butt of Sunset's jeans.

"Ahhhh, that's better," sighed Twilight as she finished peeing herself.

Sunset didn't have to go very badly, but after about two hours, she knew her bladder wouldn't be empty either. So she started to pee as well, making sure Twilight could hear the sound of her stream hitting her jeans. "Feel better?"

"Actually, it wasn't really that bad," said Twilight. "It's not like I haven't wet myself in front of you before, and as for peeing on the seat of Rainbow Dash's bus, she's getting rid of it anyway. Plus, it did feel kind of nice."

"Oh." said Sunset, blushing lightly. "Well, I don't mind either. I'll stay in my wet jeans and call Flash over to my house when we get-"

Suddenly, the bus stopped.

"Damn it!" said Rainbow Dash, stepping on the gas pedal a few times to no effect. "As if the bus's windows aren't enough, it broke down! Let's get out and run home as fast as we-"

Suddenly, the sky was full of storm clouds and it started to rain hard.

"Well, we can just go out in the rain and pee in our pants, and let it wash us off before we go back-"

There was a flash of lightning and a loud crash of thunder.

"Never mind." Rainbow held herself and fidgeted. "We gotta hold it till the rain stops."

Aria stood up and sat in the seat behind Rarity. "If I don't make it, I don't want to pee all over you."

"Awwww," said Rarity. "I mean, I still hope you make it, and I wouldn't mind if we were having a sleepover together, but I don't want to walk home with a wet spot on my rear."

Between the smell and the sound of the rain, Aria had a hard time holding it. She held herself and fidgeted hard in her seat, though at least she didn't have to worry about peeing on Rarity anymore. At the next crash of thunder, Aria leaked a little into her purple jeans.

"I don't think I'm gonna make it," said Aria. "The rain, and the smell..."

At least Rainbow Dash only had the rain to worry about, the smell didn't bother her since the worst of it was coming from her.

Aria groaned as she felt another leak she couldn't stop. Her stream started to come out into her jeans without any sign of slowing down. Aria sighed and stopped trying to hold it, peeing as hard as she could to get her relief faster.

Rarity couldn't hear the sound of Aria peeing over the rain, but she could hear her sigh of relief. "I do hope that wasn't too dreadful for you..."

"Don't worry about it," said Aria, enjoying the relief.

She has just finished peeing when the storm clouds cleared, and the sky was sunny once more.

Rainbow Dash quickly opened the door and ran outside towards the nearest gas station, while the other girls made their way home.

Rarity walked with Fluttershy, enjoying the fresh air. "Come to my house, darling, and I'll give you a bath," she said.

"That sounds wonderful," said Fluttershy.

Rarity suddenly slipped on a slick patch of mud and fell butt-first into the mud. "Would you mind giving me a bath too?"

Fluttershy giggled and helped Rarity to her feet.

As Rainbow ran, she was dribbling, and her stinky shorts grew damper and damper. The gas station was in view. This was going to be close.

As she reached the gas station door, she lost control. Pee soaked Rainbow's shorts and gushed down her athletic legs, forming a puddle on the concrete under her feet. She sighed in relief. If only this didn't mean she had to rinse now.

Wait a minute, she thought. She had last rinsed off two weeks ago, in the rain when she had first met Sunny. She was due for a rinse today. The bus trip had driven it out of her mind. She chuckled at herself for forgetting it, and when she was done wetting herself, she decided to make a quick detour first.

...

Rainbow Dash stormed into the office of the men who sold her the bus.

"Hi, Rainbow Dash!" said Flim, standing up.

"How'd you like your bus?" said Flam, looking a little nervous.

"Its windows wouldn't open!" yelled Rainbow Dash. "You KNEW I'd want to drive with the windows open because of how I smell, and some of my friends don't like that! Plus, it broke down! You said it was in perfect condition!"

"Oh, that's a shame," said Flam. "Well, we did pick it up at a junk-"

"Tell you what," said Flim quickly. "We'll sell you another bus for the same price!"

"I'm never buying from you again!" said Rainbow Dash. "Give me my money back so I can get a better bus somewhere else!"

"Oh," said Flim, sweating a bit. "About that... we... um... spent it all on... A Winnebago!"

"A cider machine!" said Flam at the same time. He and Flim looked at each other awkwardly, sweating a little.

"Nice try," said Rainbow Dash. "Give me my money back or else!"

"Our deal is final!" said Flim.

Rainbow Dash walked up to the brothers and put her armpits in their faces. They turned green and gagged. Flim threw up.

"There's more where that came from," said Rainbow Dash. "Wanna smell my feet next or my butt?"

"All right!" said Flim. He wrote a check for the price of the bus as fast as he could and handed it to Rainbow Dash. Rainbow took it, being careful not to get her pee on it.

"Next town?" said Flam.

"Next town," said Flim. They hopped in a pickup truck and drove away as fast as they could.