Author's Notes:

Smolder will be wearing a relatively tight orange T-shirt and tight jeans, and Silverstream will be wearing a light pinkish-purple tank top (the same color as her hippogriff counterpart's feathers, but covering her entire midriff) and short, tight jean shorts.

I am trying to not go with any specific outfit depicted in fanart, but I saw more than one depiction of Smolder in jeans and Silverstream in jean shorts so I'm comfortable going with them, and their shirts are ones I'd have come up with on my own cause they seem right for them.

Smolder and Silverstream were having a party at Silverstream's house. They always had fun hanging out with their friends from their high school days, but of all her friends, Smolder liked Silverstream the most. She was sure she liked her more than as a best friend, although she didn't want to tell her. She thought Silverstream was cute and funny, even though she sometimes wet herself from excitement, or from laughing too hard. This was in part because she usually tried to hold it, as she was having so much fun she didn't want to stop to use the bathroom. Besides, Smolder thought it was funny when characters wet themselves in movies.

Silverstream and Smolder had both had beans for dinner together before the party. They were just drinking a lot of punch when Smolder accidentally farted.

PPPPPPFFFFFFFT!

Smolder blushed. Although she was a tomboy, she was also a "tough" girl, and found it as humiliating to fart as if she was a lady like Rarity. Everyone knew she liked fart jokes and other gross-out stuff in movies, but she had enough pride that she didn't like to be seen doing it herself.

Silverstream started to laugh so hard Smolder thought she was going to have another one of her accidents.

"It's not funny!" said Smolder. She farted again and hung her head in shame.

"Yes it is!" said Silverstream. "And you think it is when someone else farts!"

Smolder sighed, and groaned as she tried to hold in her next big fart.

"Aw, don't feel bad!" said Silverstream once she stopped laughing, her shorts still dry. "I'm laughing WITH you, not AT you. We all fart, so we might as well enjoy it! Here!" Silverstream lifted her leg.

FFFFFFFFRRRRRRRRRT!

Silverstream resumed laughing, this time at her own fart, which was higher-pitched than Smolder's. Smolder started to relax, and chuckled. Maybe it was this that kept her from holding it in, or maybe she felt enough at ease to voluntarily let go, she wasn't sure. All she was sure about was that her next fart was longer, deeper-pitched, and stinkier than the last two.

BBBBBBBBRRRRRRRRRRRRRRRRRRRT!

Silverstream giggled. "See? Just let it out! It's really fun! Besides, beans will do that to you!" She slapped Smolder's butt playfully, causing Smolder to fart again. Then Silverstream farted louder, still as high-pitched as before.

"I bet I can fart louder than you," said Smolder.

Silverstream squealed with excitement. "I always wanted to have a farting contest!"

Smolder lifted her leg.

PPPPPPPPPPRRRRRRRRRRRT!

This fart was a little longer, and slightly higher-pitched than her last fart, and also slightly quieter.

"My turn!" Silverstream turned around and stuck out her butt.

Her rear end looks cute, thought Smolder.

PPPPPPPPFFFFFFFFFFFRRRRRRRRRT!

Silverstream farted for five seconds. This fart was louder than Smolder's last fart, and a bit wetter.

"I could get used to this," said Smolder. "Wait a minute." She waited for a few seconds, until the pressure got more intense. "All right, get a load of this!"

BBBBBBBRRRRRRRRRRRAAAAAAAAAAAAP!

Silverstream would have stood with her mouth wide open in amazement, if she wasn't laying on her back laughing, accidentally letting a few short, wet farts, at the sound of this boisterous fart that lasted seven seconds.

Smolder felt her butt, and was relieved that it felt dry. Farting was one thing, but messing herself would be too much.

"Looks like you're winning!" said Silverstream. "I told you it'd be fun! Ooh! I should try what you did! Then I might fart for longer!" She waited about 30 seconds, then she felt another big fart coming. "Here it comes!" Silverstream lay on her back and raised her legs in the air, causing Smolder to feel more aroused.

FFFFFFFFFFRRRRRRRRRRRRRRRRRRRRRRT!

A loud, slightly deeper-pitched fart made its way out of her, and it continued for eight seconds. Smolder was amazed that someone as beautiful as Silverstream could fart for so long. And she was sure this was louder than her latest fart.

Silverstream giggled. "My shorts are gonna stink for a long time, never mind my underwear!" She giggled.

"Mind if I take a look to see if you made a mess in them?" asked Smolder.

"I don't think I did, but sure." She turned around.

Her heart beating fast, Smolder examined Silverstream's butt, rubbing it for a bit, and sniffed. Her shorts smelled of farts, but not of poop, and she couldn't see a stain. She rubbed Silverstream's butt longer than she needed to, liking the way it felt, and Silverstream didn't seem to mind. Once Smolder had enough, she slapped Silverstream's butt. "Nope, you're good!"

Silverstream giggled. She liked having her butt slapped.

Smolder lifted her leg and let out a very loud, very wet fart that lasted five seconds.

"Uh-oh," said Smolder.

"What?"

"I think I soiled myself."

"Want me to check?"

"Yeah." Smolder turned around.

Silverstream examined Smolder's butt up close. She felt it a bit with her hands, and then sniffed it. Her jeans also smelled of farts, but only farts. She loved being this close to Smolder's butt. It was about the size of Sunset Shimmer's butt, yet firmer.

PPPPPPPPBBBBBBBBBBBBBBRRRRRRRRRRT!

Silverstream fell on her butt, but Smolder's sudden fart wasn't over yet. She farted for six seconds, but this was the loudest fart yet, and this contest was for volume, not length.

Smolder chuckled. "How'd you like that?"

Once Silverstream recovered from the smell, she laughed. "Nice one, Smolder! I think you won our little contest. But let me try one more time!" Still in sitting position, she grunted and let out a fart that was about as loud as her last fart, but a bit deeper-pitched and wetter. "Nope! You win! As loser, I deserve a spanking."

Did I really just hear that? She's asking me to spank her? "As you wish." Smolder put Silverstream over her lap and slapped her butt. Silverstream squealed with excitement at each swat. Smolder spanked Silverstream ten times, and set her down. "You're real weird, Silverstream," Smolder chuckled.

"I know." Silverstream giggled.

They continued their party, drinking a lot more punch. Silverstream had drank a lot of soda before coming to the party. When she and Smolder were sitting on the floor playing cards, the sudden urge to pee hit her, but she decided to hold it because she was having so much fun.

"What do you say we go see the new Daring Do movie tomorrow?" Smolder suggested. "Then let's race up and down the stairs at the park?"

Silverstream was so excited she wet her shorts. As soon as she realized her crotch had suddenly gotten warm and wet, and that her butt was starting to get soaked as well, she paused, and then giggled. "Whoops!"

Smolder watched as Silverstream's shorts darkened and a puddle grew rapidly under her where she sat. "Wanna go change?" she said.

"Nah, a little pee never hurt anyone!" Silverstream giggled. Smolder still hadn't gotten used to how unashamed Silverstream was of wetting herself. She even seemed to find it funny. How could she feel so casual or amused about something so embarrassing? Farting was one thing but this was another entirely.

Once Silverstream finished peeing, she mopped up her puddle and continued the party in her wet shorts.

About half an hour later, they were on the couch playing Halo. Smolder suddenly felt the punch hit her.

"I'll be right back," said Smolder, putting both hands on her crotch.

"Is everything all right?" asked Silverstream.

"I have to pee real bad." Smolder started to run for the bathroom, holding herself with one hand.

Silverstream ran up behind Smolder. Though Smolder was more athletic, Silverstream was faster, and she caught up to her, grabbed her from behind, and started tickling her sides.

Smolder was extremely ticklish and started to laugh uncontrollably. "Hahahahaha! Silverstream stop! Hahahahaha! I have to pee! Hahahahahaha!"

"Does someone have to go potty?" Silverstream tickled harder, and Smolder laughed harder.

In seconds, she was soaking her jeans. The wet spot on her crotch expanded rapidly, and soon the legs of her jeans were wet. Smolder barely noticed that she was having an accident and continued to laugh as Silverstream kept tickling. After a while a puddle began to form at her feet.

Smolder peed for about 30 seconds, and Silverstream stopped tickling about ten seconds after she was finished. Smolder was breathing heavily, having secretly enjoyed being tickled. She then fully realized how warm and wet she felt. She felt her pants and blushed beet red. She couldn't believe she had wet her pants in front of the girl she liked. "Silverstream, look what you made me do!"

"It's not so bad," said Silverstream. "I wet myself all the time and I think it's funny, so why can't you?"

Smolder looked down at Silverstream's wet shorts. "I guess... It was kind of funny, wasn't it?" She chuckled. She had to admit the warm wetness did feel nice, too. She was used to getting wet with water or even mud while wearing outfits like jeans or shorts, so this wouldn't cause her too much discomfort. "Just promise not to tell anyone."

"Don't worry, this stays between the two of us! I'll even clean up your puddle."

After Silverstream mopped up Smolder's puddle, they continued their party. Smolder stayed in her wet pants, surprised to find she didn't really mind it as much as she thought she would.

About an hour of fun later, they were watching TV. Their pants were still damp and smelled bad, and by now Silverstream needed to pee again. She decided to hold it as usual, waiting until the last possible second - or something caused her to lose it.

As it so happened, it was then that Smolder let out a loud fart.

PPPPPPPRRRRRRRRRRT!

Silverstream started to laugh.

"Be careful you don't have an accident," Smolder teased.

But Silverstream was already peeing, re-wetting her shorts and soaking the already-stained seat of the couch. She stopped laughing and peeing, felt how warm and wet her shorts were, shrugged, and let the rest of it out, giggling.

Smolder waited until Silverstream was finished, and said "You need a spanking for wetting yourself."

"Actually, YOU need a spanking for MAKING me wet myself!" Silverstream put Smolder over her knee, reached under her to pull her zipper down, and pulled down her pants.

Smolder blushed beet red. "What are you doing?"

"Nice underwear, Smolder!" She was wearing a white pair of panties that was yellow at the crotch, between the legs, and on the lower butt. Silverstream raised her hand and slapped Smolder's butt.

Smolder winced with each swat, but had to admit to herself that as humiliating as this was, she was enjoying this a bit. After her behind was slapped the sixth time, she peed a little, but held the rest of it in. She wondered, with Silverstream asking her to spank her, making her wet herself, and then pulling her pants down and spanking her... did Silverstream feel the same way about her?

Once Silverstream was done spanking Smolder, she let her get up.

"I have to pee," said Smolder.

"Just go in your underwear," Silverstream said cheerfully.

"I'm not gonna wet myself twice in one day." Smolder waddled to the bathroom with her pants still down and around her ankles. She closed the door, not locking it behind her. She was about to pull down her panties, when she stopped. She was already wet, so surely this couldn't hurt. She sat on the toilet with her underwear still up and peed. She sighed of relief, taking a naughty pleasure in the fact that she was peeing her underwear, as well as enjoying the warm release.

She farted before she was done peeing. Her panties were completely soaked and yellowed. She pulled her damp jeans up and looked in the toilet. The water was very yellow. She knew she'd probably smell, but hoped Silverstream would think this was from her first wetting.

She walked out of the bathroom. "I made it," she said.

"Ooh, that's great!" Silverstream slapped Smolder's butt playfully. "That felt a bit wetter than it should have."

Smolder blushed lightly. "I may have peed in my underwear again."

Silverstream giggled, and Smolder laughed along with her.

They continued their party before they got tired and went to sleep in sleeping bags, without changing out of their wet pants. They drank a lot of punch before bed but hadn't bothered to use the bathroom, so they woke up very wet. They sat up at the same time, realized that they had both wet the bed, and laughed.