Author's Notes:

I'm tired of writing fetish fuel, but I did this last chapter. This is my second attempt and I hope it's to your liking. Enjoy

(I might not write more fetish stuff after this, at least not for a while)

It had been a week since Rarity and Fluttershy had considered telling Rainbow Dash and Pinkie Pie about their secret activities, and over the course of the week, whenever they were together, they were trying to pluck up the courage to tell them. Trying to remember that if Rainbow and Pinkie really loved this as much as they did, then farting, wetting, and messing in front of them wouldn't be any different than doing it in front of each other, which they could easily do without any shame.

"Today's the day I tell Rainbow Dash," said Rarity as she and Fluttershy met up at the park, wearing their usual skirts. "But you can hold off as long as you want to."

"Actually, I think I'm ready," said Fluttershy. "I'll tell Pinkie Pie."

"We'll meet back here and tell each other how successful we were. Ooh, I'm so nervous."

Fluttershy playfully used her gem's magic on Rarity, who felt a sudden intense urge to pee. Rarity giggled, and cast the same spell on Fluttershy.

"Should we race to the nearest bathroom?" said Rarity.

Fluttershy was already peeing in her dress, sighing in relief.

"Or not." Rarity started to pee as well.

"Oh, I didn't realize you wanted to turn it into a race."

"It's quite all right. Besides, if we're successful, it can be a four-way race."

Once they finished wetting themselves, they quickly dried themselves off with their magic and each walked to their destination.

...

Rarity knocked on Rainbow Dash's door. Rainbow opened it.

"Hi Rarity."

"Good morning, Rainbow Dash. If you don't mind... there's something I'd like to ask you."

They walked into the living room.

"So, about a week ago, you said you liked to... wet yourself, and soil yourself, and then clean it up with the magic gem I gave you."

"Yeah. All the time. It's really fun. You should try it."

"Could you... maybe demonstrate for me?" She wanted to be sure Rainbow actually did this before she told her anything.

"Sure!" Rainbow didn't stop to wonder why Rarity would make such a request of her. She touched her gem and peed in her black compression shorts.

Rarity could tell she was really enjoying it.

"Want me to mess myself too?" said Rainbow once she finished peeing.

"Please do."

Rainbow turned around and released a ton of hyperscat into her wet shorts, to the point it stained the back of her skirt. Rarity could easily tell Rainbow had just soiled herself.

"Ahhhh," sighed Rainbow Dash. She then touched her gem, and in an instant, she was completely clean and dry. "Feel my butt, so you know there's no mess in there. Don't worry, I won't fart on you!"

Rarity felt Rainbow's butt, though she didn't need to, for she knew exactly how the gem's magic worked. Her butt felt so firm, and she liked it.

"You... really think that's fun, don't you?"

"Hell yeah! Of course, I still won't do it in front of a crowd that will laugh at me. Or anyone besides Pinkie Pie, really. And you, because you asked for it. Hmm. Why did you want to see that anyway?"

"So... if you'd do that in front of Pinkie Pie, does that mean she finds it fun as well?"

"She once wet herself and messed herself in front of Fluttershy! She has no shame about it. But you've noticed she doesn't do it when we're all together."

"Do you two... do that... together all the time, and get REALLY messy with it?"

"I didn't want to mention it to you, but... yeah, we do. Why are you suddenly so interested in this?"

"Because..." Rarity took a deep breath. "Because I do the same thing. I act refined and ladylike when I'm in public, or with any of you, but deep down... I not only love farting, but I love getting dirty. Especially by wetting myself and messing myself. Once I found out you like to do that, I thought we could have fun together." She was blushing lightly as she finished.

"Wow, I never would have guessed!"

"Don't tell anyone except Pinkie Pie about this."

"I owe you that much for giving me that magic gem."

"And... When I'm alone, or with my partner in these... activities, I can fart very loud."

"Who's your partner?"

"I'll tell you if she's able to tell Pinkie Pie about this."

"Fair enough. Can I hear a loud fart?"

It would be a good start. She quickly used the gem's magic on Rainbow Dash.

"Oh, why'd you make me have to pee?"

"This is still going to be difficult, so it might be easier if you wet yourself first. Or hold it, and then wet yourself from laughing at my farts."

"All right," said Rainbow. She held it, curious as to what Rarity's second option would be like.

Rarity touched her gem, then lifted her leg and let out a silent fart.

"I didn't hear anything," said Rainbow, with both hands on her crotch.

Rarity tried to remember Rainbow loved this as much as she did. She turned away from her, imagined that no one else was there, and farted again.

FFFFFFFFFFFRRRRRRRRRRRRRT!

Rarity blushed lightly at how loud this fart was, and it blew her skirt back enough so Rainbow could see her purple panties.

Rainbow started to chuckle, but held in her laughter.

Rarity suddenly felt less embarrassed and a little more mischievous. She wanted Rainbow to laugh and pee herself. She touched her gem again, and let out a series of loud, wet farts, during which her blush started to fade and she started to giggle.

The sight of the seemingly prim, ladylike Rarity farting so loud, as well as the occasional sight of her underwear when her skirt was blown back by some of the more powerful farts, was too much for Rainbow. She removed both hands from her crotch and laughed her butt off. In seconds she was peeing uncontrollably, flooding her shorts and forming a puddle on the floor.

By the time she finished wetting herself, she was still laughing, and Rarity was still farting. With a mischievous smirk, Rarity touched her gem again, not only recharging her farts, but refilling Rainbow's bladder. Rarity continued to fart as loud as she could, and Rainbow continued her hysterical fit of laughter, peeing again the instant Rarity cast the spell on her.

Finally, Rarity stopped farting.

Rainbow was laying on her back in a massive puddle of pee, her shorts drenched. "I never knew you had it in you!" she said when she caught her breath.

"Looks like someone laughed a little too hard," said Rarity.

Rainbow felt how wet her shorts were. "That was really fun. I didn't even do that with Pinkie. We should totally make that part of our sessions!"

"Yes, it was rather entertaining."

Feeling much more confident now, Rarity sat in Rainbow's puddle, touched her gem, and started to pee in her dress.

*psssssssssss*

"Ahhhhhh..."

Rainbow chuckled. "Nothing like making me pee myself to boost your confidence!"

After Rarity finished peeing, she used her gem to make Rainbow need to poop really badly - and the instant after, Rainbow did the same to her.

PPPPPPLLLLLLLSSSSSSSSH!

The air was full of two sets of giggles, and a horrid smell.

...

"So... um... Pinkie Pie... remember how you said you and Rainbow Dash like to... um... pee in your panties, and... um... mess them? And... fart a lot?"

Fluttershy stood in the living room of Pinkie's house. Pinkie Pie was wearing short skintight spandex teal shorts and a yellow T-shirt today.

"Yeah, it's REALLY fun."

"How would you react if I wanted to try it?"

"I would wet myself with excitement!" She giggled. "You and me and Rainbow Dash could have TRIPLE the fun!"

"Well..." Fluttershy took a deep breath. "I've been doing this for longer than you have. I know exactly how fun it is."

"Hold on a second!" Pinkie touched her gemstone, then let out an excited squeal and started peeing her shorts. "Oh my gosh this is so exciting! Now we have someone else to do all this fun stuff with!"

"You don't think I'm weird or anything, right?"

"Of course not silly! I already told you I find it really fun! Ooh, let's start now!" Pinkie touched her gem again.

Fluttershy felt an intense pressure in her bowels. Much like Rarity, she let out a silent fart first.

"Don't be shy! You can fart as loud as you want around me! Here!" Pinkie touched her gem again and let out a high-pitched, eight-second fart. "Besides, I'm still peeing!"

Fluttershy let out a quiet but audible fart. Then a slightly louder fart. Then, feeling more confident, she turned around, bent over so her butt was facing Fluttershy, and released a flurry of boisterous farts, some as long as six seconds, and, like Rarity, some blew her skirt back so Pinkie could see her green panties. Fluttershy blushed lightly but giggled. She was enjoying this.

Pinkie soon joined in farting with Fluttershy. They did a rump bump and farted into each others' butts. They both really liked how this felt.

Then Pinkie cast another spell with the gem.

Fluttershy needed to pee badly. She instinctively started to walk toward the bathroom, but stopped. Still farting repeatedly, Fluttershy let out a sigh as she peed, soaking her panties and the crotch of her dress as rivers of pee trickled down her legs.

Pinkie giggled, and, with another touch of her magic gem, released another stream into her already-wet shorts.

Fluttershy no longer felt shy about any of this around Pinkie. Before she even finished peeing, she touched her gem again, and noisily soiled her panties, giggling rather than blushing.

Pinkie also giggled, and filled her shorts with hyperscat.

...

They arrived at their spot in the park at the same time, both dry, clean, and smelling very nice.

"I am dreadfully sorry I'm late," said Rarity. "Once I told Rainbow Dash we had a little... fun with each other, and we got carried away. You'd never guess the state I was in ten minutes ago."

"The same thing happened with me and Pinkie," said Fluttershy.

"So it was a success then?"

Fluttershy nodded.

"Same here. Unless they have plans for the rest of the day, let's lead them to our secret spot."

They did a rump bump. Both farting loudly. They giggled, playfully swatting each others' rears, and walked back the way they had come.

...

"Fluttershy?"

"Rarity?"

Rainbow and Pinkie were surprised to see Fluttershy and Rarity, respectively, as the "fourth" member of their team, but it didn't come as too much of a shock after earlier this morning. They stood at the edge of the mud field with the horses.

"Do any of the others..." said Rainbow Dash.

"Not as far as we know," said Rarity. "Now, let's have all the messy fun we want here!"

"And if you want the horses to do anything, I can tell them to," said Fluttershy. "They're trained to sit on anyone who lays down behind them, and fart on them if they get the chance."

"Oh I'm going to give them plenty of chances to do that!" said Rainbow Dash.

"They can give a really nice golden shower too," said Rarity.

Pinkie was so excited she peed, having drank several sodas after Fluttershy had left the first time.

"Looks like someone's already having fun," Fluttershy giggled.

"Well what are we waiting for?" said Rainbow Dash.

The four girls splashed in the mud, farting, wetting themselves, soiling themselves, having the horses sit and fart on them, and sitting and farting on each other.

As they sat side by side, receiving a golden shower from three horses in a sort of triangle formation, while peeing non-stop at the same time, and each occasionally letting out sloppy wet farts that made their underwear dirtier, they knew they were going to have more fun than ever before.

Of course, they'd still have just as much normal, less messy fun with Sunset, Twilight, and Applejack. And not tell them unless they found that they had the same interest too.

"Don't those horses ever get tired of holding their legs up?" said Pinkie Pie.

"I already asked them, and they're fine as long as they stretch them every minute or so," said Fluttershy.

"Now remember," said Rarity. "Rainbow Dash, Pinkie Pie, if either of you fart while anyone other than the four of us are around-"

"Yeah yeah, you'll act all offended," said Rainbow Dash. "It's worth it to have you be a part of this!"

Rarity giggled, and then let out a boisterous fart, soiling her panties more.