Author's Notes:

This chapter might be a little similar to Discord's Fetish for Celestia, but that chapter didn't include bondage or scat.

It took me this long to do one for my second favorite princess to fetishize. I don't think she'd mind that I did this. After all, there is no wrong way to fantasize. She said it herself.

Princess Celestia was having a romantic dinner with Discord. They had just played a very interesting game of volleyball, and Celestia was still wearing her sports outfit, a sparkly blue tank top and short, skintight, sparkly pink shorts. She was always a sight to behold and her outfit only made her more lovely.

Once they were done, they returned to Discord's world.

"Fluttershy's not coming today, is she?" said Celestia.

"Not today," said Discord.

"In that case..." Celestia blushed lightly, nervous about telling someone this, but she knew Discord would probably have fun with it. "Can you help me play out some of my... fetishes?"

"Of course! I'm sure it'll be fun, and anything for you!"

Celestia whispered into Discord's ear.

"Ooh, who'd have guessed you were into that? Your wish is my command!"

Instantly, Celestia's back hooves were tied together, and her front hooves were tied behind her back. Her wings were tied to her side. She leaned forward into a position with her head on the ground and her rear end in the air.

Discord walked over to Celestia's butt and rubbed it with one hand. Then he patted it lightly.

"You can slap harder than that," said Celestia.

Discord spanked Celestia hard. Celestia let out a squeal of pleasure.

He swatted her rear 30 times before she said "All right, you can stop now."

Discord was initially disappointed, but remembered what she had told him to do next, and cast a spell on her.

Celestia let out a loud, wet fart. She blushed lightly but giggled, enjoying the opportunity to do something unprincesslike.

Discord started to laugh as Celestia released a series of loud farts, some of them high-pitched, some of them deeper-pitched, and some of them wet, ranging from one second long to six.

She was still farting when Discord started to rub her butt again. Celestia liked this combination. She hadn't even asked Discord to rub her butt while she was farting. Discord must really like her butt. Or her farts. Or both.

Once Celestia finished farting, Discord sniffed her butt. Her shorts smelled of farts.

Then Discord cast the next spell on Celestia. Instantly, she felt an intense urge to pee. This surprised her a bit even though she had asked for it, because she had never jumped from an almost-empty bladder to desperate before.

Celestia struggled against her ropes, but it was no use. Not that she really wanted to get free, she wanted to hold it until she wet herself, and Discord tying her up would prevent her from pulling her shorts down or finding a toilet, as intended.

"I have to go to the bathroom," Celestia said, fidgeting a lot.

"Just hold it," said Discord, playing along.

The pressure in her bladder became more intense. Celestia really needed to go. She fidgeted harder, but her ropes would not come undone. Discord had made sure they were tied very tight. She couldn't even cross her legs or hold herself. She was completely helpless to keep from wetting herself, and she liked it. Her heart was pounding with excitement at the situation she was in, and anticipation of losing control.

"I don't think I can hold it," said Celestia. "I need to pee so bad!"

"If you can't hold it, go in your shorts," said Discord, slapping Celestia's butt again. Then he cast a minor spell, and Celestia let out a loud fart. Celestia couldn't help but chuckle a bit.

She held it in for over half an hour, by which point her bladder was overflowing and she fidgeted harder, about to burst.

"I can't... hold on... any longer..."

Celestia's bladder finally gave out, and she sighed in relief as her skintight pink shorts darkened, and pee poured down her legs, forming a puddle under her.

She had peed in these shorts before, and other outfits, but she had never experienced a loss of control like this before and took immense pleasure in it. The warm release felt even better than any of her other wettings.

"Ahhhhh, that's better..."

"Having fun?" Discord slapped Celestia's butt lightly.

She peed for two minutes, after which her legs and the crotch of her shorts were soaked, and she was in a big puddle.

Discord spanked her five more times, then made her fart for another minute.

"Now, remember what you have to do next," said Celestia once she was done farting.

"Right," said Discord. "This will be even more fun!"

Discord magically filled Celestia's bladder to the brim again, and, just as she started to fidget, he began tickling her sides.

Celestia started to laugh very hard, for she was extremely ticklish.

Discord tickled Celestia's sides with both hands, and conjured feathers to tickle her armpits and all of her hooves.

Celestia laughed harder. "HAHAHAHAHAHA! STOP IT! HAHAHAHAHAHAHAHA! I'M GONNA PEE! HAHAHAHAHAHA!"

Mere seconds later, Celestia was already peeing. Her shorts were already wet but she was still able to enjoy the feeling of wetting herself from laughing too hard.

Just under two minutes later, she had finished peeing, but Discord was still tickling her. After another minute, he finally stopped.

"That was wonderful," said Celestia, panting.

"I look forward to doing it again next time," said Discord. Feeling mischievous, he cast another spell.

Celestia felt a pressure in her bowels that she knew wasn't a fart. "I have to go to the bathroom again, and it's not pee this time."

"So?"

"I've never done that before, and I'm not sure I'll like it..."

"If you don't like it, I'll clean you up right away. You have my word."

Celestia thought about it. Maybe it wouldn't be so bad.

But before she could come to a decision, the decision was made for her. She involuntarily filled her shorts with manure. The room started to smell worse than her farts, and she blushed lightly.

"You know, that... actually felt pretty good."

"I knew you'd like it." Discord set Celestia into a sitting position. She felt her mess squish beneath her rear, and took pleasure in this sensation.

Discord made Celestia fart more, with the occasional shart. Celestia had just realized a new fetish, though she probably wouldn't dare attempt it without Discord, because it would be harder to clean up.

Once they'd had their fun, Discord snapped his fingers. Celestia was untied, dry, and completely clean. Even the fart smell vanished.

"I haven't had that much fun in a long time," said Celestia. "I'll let you know when I'll be able to do this again."