Rarity and Fluttershy met at the mud field. This time Rarity was wearing her purple skirt, and Fluttershy was wearing a pair of short, green, skintight shorts, along with tank tops, light blue and white, respectively.

They began rolling in the mud, farting, soiling themselves, and wetting themselves repeatedly.

They lay facedown besides the horses, and Fluttershy didn't even have to tell them to sit on them. They both used their magic gems on the horses to make them fart on them for about half an hour. Rarity and Fluttershy peed three times before Fluttershy told them to get up, and then they made them take a dump on them.

After about two hours, Rarity and Fluttershy sat side by side in a pile of manure. They were very dirty and smelled of pee, poop, and farts.

"Do you think Rainbow Dash and Pinkie Pie would like this?" said Fluttershy.

"We are NOT letting them see us like this," said Rarity.

"No, I mean... do you think they'd like the power to do all this? They don't have to do it WITH us. You could leave some crystals for them without them knowing it's you." She let out a sloppy wet fart, soiling her shorts further, and giggled.

"That does sound like a good idea. Of course, they might only have fun with the farting part of it." She lifted her leg and let out a boisterous wet fart.

"Oh my, that sounded wet." Fluttershy was unable to keep the amusement out of her voice. "Are you all right?"

"Quite all right, though the same can't be said for my underwear." Rarity giggled. "But remember. I must keep up my ladylike facade around the others. If they fart in front of me, I will act disgusted and offended. Now, it's time for the golden showers!"

...

Rainbow Dash heard a knock on her front door. She opened it. No one was there. She looked down and saw a crystal attached to a necklace. It was glowing in her presence, as if calling to her.

She picked it up and immediately knew what it could do. She grinned mischievously, and ran to Pinkie's house as fast as she could.

Fluttershy watched from behind a tree.

...

Rarity was about to walk out of the bushes near Pinkie's house when Rainbow Dash came into view, and she ducked back inside.

Rainbow knocked on Pinkie's front door. Pinkie answered the door. She was wearing short, tight jean shorts, and Rainbow was wearing her usual black compression shorts under a miniskirt.

"Ooh, hi Rainbow Dash!" said Pinkie. "You won't believe what happened today!"

"I challenge you to a farting contest!"

"I accept!"

"What is it you wanted to tell me?"

"Nothing yet."

As soon as they were inside, Rarity got up and walked away.

"So, better get out the fart powder," said Rainbow Dash.

"I don't need any," said Pinkie. "I'm gassy enough right now!"

"If you say so."

They both touched their gems and let out a series of loud farts.

After a few minutes, once they decided to stop playing around, they touched their gems again and farted for several minutes straight.

"Seriously," said Rainbow Dash after fifteen minutes, speaking loudly to be heard over the continuous sound of flatulence, "there is NO way you could fart this long unless..." She saw the gem around Pinkie's neck. "You got one too didn't you!"

"Got one what?"

"A magic gem that can make us fart as long as we want! I have NEVER heard you fart longer than a minute before!"

Pinkie thought she had been sneaky with her new magic trick. She forgot to recharge her fart, and stopped.

"Ha! I win!" Rainbow continued to fart for another minute before she was done.

Pinkie used the gem's magic again.

"Oh, I need to go... BAD!" said Rainbow Dash, for her bladder and bowels were now full. "You did this didn't you?"

Pinkie's giggling fit gave her away. Rainbow used the same spell on Pinkie. Pinkie immediately stopped laughing as soon as she felt the intense pressure.

They ran to the bathroom, but kept fighting in front of the door, pushing and shoving each other, each trying to get into the bathroom first.

"Come on!" said Rainbow. "I really need to go!"

"So do I!" said Pinkie.

Rainbow was really regretting casting that spell on Pinkie.

"I'm serious, I'm about to burst!"

"Me too!"

And then...

*pssssssssssssss*

PPPPPPPBBBBBLLLLLLRRRRRRRT!

"Ahhhhhhhh," both girls sighed as they filled their shorts with pee and poop. They blushed lightly, but felt immensely relieved all the same.

Once they finished their accidents, they sat still, shocked and a little embarrassed at what they had done. Then they remembered what else their gems could do, and used them to clean themselves up, while making their puddle disappear. It was like it never happened.

"You know," said Rainbow Dash, "with these, no matter how dirty we get we can always clean up right away. And anything else. And it WAS kind of fun wetting and soiling myself."

"Are you thinking what I'm thinking?" said Pinkie.

...

Rainbow and Pinkie pulled their shorts up after releasing enough wet hyperscat to create a big pile of it in the middle of Pinkie's party room. They giggled at how dirty their underwear felt.

They jumped into the shit and started rolling around in it. Occasionally farting, wetting themselves, and messing themselves.

"Want me to wash that off you?" said Rainbow Dash.

As Pinkie sat still, Rainbow stood above her so Pinkie was between her legs, and peed herself for four minutes, giving Pinkie a golden shower.

"Wow, that was really fun!" said Pinkie once Rainbow had finished. She was dripping with pee but still smelled of dung. "Want me to do it to you?"

They swapped positions, and Pinkie peed through her jean shorts all over Rainbow Dash for another four minutes.

"It's a shame Rarity finds this kind of thing disgusting," said Rainbow Dash once her golden shower was done. "I think she'd like a golden shower if she gave it a chance."

"Well, she's missing out!" said Pinkie. She let out a sloppy wet fart, and giggled. "Oops... I think I made another mess in my shorts!"

Rainbow's shorts were still full of poop from earlier. She noisily released another wet mess into her shorts, and chuckled. "So did I!"

Once they were done, they used their gems to clean up everything. Both they and the room were completely dry and clean.

"We're gonna have a lot of fun with this," said Rainbow Dash.

"But let's not use it on anyone else," said Pinkie. "Unless they REALLY annoy us!"

"It would be really funny to make Rarity fart like that. But, if she found out how we did it she'd probably smash these gems, and who knows if we'll ever get another one?"

"Not if we do it right after giving her something to drink, making her think we spiked it with fart powder or something!"

"I like the way you think. Let's do it tomorrow! But, ONLY the farts, and ONLY on her."