Author's Notes:

This is a direct sequel to the previous chapter.

Twilight and Rainbow Dash had been locked in the closet for four hours. By now the gala was over and everyone in the castle was asleep for the night.

By now they both needed to pee really badly, and their constant farting told them the next wave of poop was coming.

"I just changed into these panties," said Twilight. "I don't want to..." FFFFFFRRRRRT!

She let out another loud fart, leaking a bit into her underwear.

Rainbow farted loudly for five seconds, and at the end her Wonderbolt suit felt dirtier.

The inside of the closet smelled really bad from the shit that was still in the bucket, and the farts.

Twilight moaned as she felt her panties grow warm and wet, and pee flowed down her legs, forming a puddle under her feet. The sight of this - and the puddle reaching her hooves - caused Rainbow to pee a little too.

Once Twilight finished wetting herself, she let out a series of boisterous wet farts and her panties started to feel dirty.

Then, the desperate urge to poop hit Rainbow Dash. She farted several times, but the pressure grew heavier, and in the end, she realized she wasn't going to hold it, so she let it all out in her suit, peeing and messing herself, and sighing of relief.

"When we get out of here, after I take a LONG shower, I'm asking Celestia to put more bathrooms in the castle!" said Twilight, still desperately trying to hold it.

"Just let it all out," said Rainbow. "You won't be able to hold it till morning."

Twilight only farted in response.

She held it for another half hour, but ended up soiling her panties again. She changed into her next and last spare pair of panties, hoping she didn't have another accident.

Five hours later, Rainbow had soiled herself again, and Twilight was desperately trying not to, farting every few minutes.

And then, Twilight wet her panties and soiled them simultaneously. Though she dumped her mess in the bucket, this was her last pair of underwear, so she put them back on.

Finally, in the morning, someone opened the closet and let them out, nearly fainting from the smell.