Author's Notes:

So, this chapter will have more fetish fuel, but also a little more story.

While Rainbow Dash was talking with Rarity, Pinkie Pie was over at Fluttershy's house. Fluttershy was wearing her usual green skirt, and Pinkie was wearing her jean shorts.

"So, you'll never guess what happened the other day!" said Pinkie.

"What?" said Fluttershy.

"Someone gave me and Rainbow Dash this really cool magic gem! See what it can do!"

Pinkie touched the gem, then lifted her leg and farted loudly for about seven seconds.

PPPPPFFFFFFRRRRRRT!

Fluttershy giggled a little. Of course Pinkie would be less secretive about her new power than she and Rarity were.

"But that's not all it can do!" She touched the gem again, and then started peeing, giggling as her shorts became soaked and pee flowed down her legs and formed a puddle at her feet.

"Oh my..." Fluttershy blushed lightly, hoping she wouldn't give away how much she liked to do this.

Then Pinkie turned around and released a mudslide into her shorts.

"You know you're cleaning this up," said Fluttershy.

"Of course I am!" Pinkie touched the gem, and the mess vanished. Pinkie's shorts were now dry, and she turned around to show Fluttershy the brown stain on her butt was gone.

"Wow, that's... amazing."

"Would you like one?"

"Well... actually, I already got one. In case I find a pig in a pigpen and want to play with it. Then I can get as dirty as I want and clean up easily."

"Is that all?"

Fluttershy blushed a little more. "Well... I hope I won't ever have to do this, but if I ever... um... have an accident in my panties... I could hide it until I clean it up."

"Don't feel ashamed, I'll do that all the time now! And me and Rainbow Dash have had so much fun farting, and peeing ourselves, and messing ourselves, and no matter how dirty we get, or how big of a mess we make in the room, one use of the gem's cleanup magic and POOF! It's like it never happened! Except we remember it!"

"Sounds like fun," said Fluttershy. "For you, I mean. I'm not sure I could do that."

"That's all right. And I won't use anything other than the cleanup magic on you."

"I appreciate that. Now, I need to use the bathroom. And I really don't want to do it the way you did."

If it was Sunset, Twilight, or Applejack, Pinkie might have pushed her to try it, but she didn't want Fluttershy to feel uncomfortable so she let her walk into the bathroom.

Once the door was shut, Fluttershy sat on the toilet and peed through her panties, sighing in relief. Pinkie would never know! Once she was finished, she touched her magic gem and dried herself off, then flushed the toilet and walked out the door.

...

The next morning, Rarity and Fluttershy sat in the mud field, wearing their skintight shorts, which were wet, dirty, and very smelly from their usual activities. As was the rest of them.

"So, yesterday, I told Rainbow Dash that I gave her the magic gem," said Rarity. "And that I secretly love to fart. But I didn't say anything about you, or what else I like to do."

"And Pinkie told me she loves peeing herself and soiling herself with the gem's magic," said Fluttershy. She paused to fart loudly. "So does Rainbow Dash. They have as much fun with it as we do."

"Do they?" Rarity lifted her legs slightly. "Hrrrrggggghhh..." She released a wet mess into her shorts, sighed, and continued. "At least there won't be too much to fear if they find out. They'd probably want to come here with us."

"Maybe not yet." Fluttershy started peeing. "I don't know if I'm ready for them to find out yet."

"I don't think I am either," said Rarity as she also started to pee. "But maybe one day. Rainbow Dash is willing to keep the secret about me farting. We even have an arrangement going where if I feel like farting when everyone else is around, I can use the magic on myself and on her, so everyone thinks she's the only one farting." She paused to let out a loud fart, still peeing. "And she'd tell Pinkie that she used the magic on herself."

"That's wonderful. If you do that... is it all right if I fart too?"

"I don't see why not."

"As for me... Pinkie didn't try to push me to use any power other than the cleanup magic. She wet her shorts and soiled them right in front of me as a demonstration."

"Of course she has no shame there. But Rainbow Dash has her pride, and I don't think she'd wet herself in front of anyone but Pinkie."

"Unless she knew they liked to wet themselves as well."

"Maybe some day we'll let them into this mud field."

"Um, Rarity, there is something new I'd like to try."

"What is it?"

"Would you like to sit on me and fart on me?"

"That sounds fun!" Rarity let out a squeal. "Would you do the same to me?"

"I'll do it first if you want. Just let me finish peeing."

"Whatever for?"

"Good point."

Rarity lay facedown in the mud, and Fluttershy stood up. Both of them were still peeing. Fluttershy sat on Rarity's butt, feeling her mess squish beneath her rear. Rarity giggled as she could feel Fluttershy peeing on her.

Fluttershy touched her gem, and let loose with a flurry of boisterous farts. Some of which she was sure were sharts, but Rarity didn't mind. If anything she liked them more!

She stopped peeing about a minute into the farting.

After about fifteen minutes of farting, Fluttershy stood up and lay facedown in the mud. Rarity got up, smelling more like farts than she had fifteen minutes ago, and sat on Fluttershy's butt. She touched her gem, and immediately, a series of loud, wet farts erupted out of her rear.

Fluttershy giggled at how wet Rarity's farts were. "Be careful you don't have an accident!"

"It's a little late for that," said Rarity. "Wait... you don't mind if I soil myself now, do you?"

"Not at all!"

Rarity continued to fart - and shart - for fifteen minutes. After which, they lay on their backs, having greatly enjoyed the last half hour. Every minute of it, whichever position they were in.

Rarity and Fluttershy's shorts were dirtier and smellier than when they had started, if that was even possible. They touched their gems lightly and started peeing again.

"I wonder if Rainbow Dash and Pinkie Pie do that," said Fluttershy.

"Without a doubt," said Rarity. "Now, in a few minutes I'll have to get back home and make some dresses."

"Is it that time already?" said Fluttershy, who also had things to do today, which is why they planned for this morning.

"We'll set up another time soon."

Knowing their fun was almost over for the day, Rarity and Fluttershy each let out a boisterous fart, releasing another brown mess into their shorts, while still peeing.