Rainbow Dash pranks Rarity, making her extremely gassy.

Rainbow Dash pulls a prank on Sunset Shimmer causing Pinkie Pie to sniff her butt.

Aria gets a spanking fetish and tries to get Sonata to satisfy it.

The sirens gain the power to brainwash animals and use it to exact their revenge.

The Equestria Girls all get very dirty.

The sirens cast a spell on Sunset Shimmer, Rainbow Dash, and Rarity so they can't undress.

Pinkie Pie discovers a new type of mushroom that causes extreme flatulence.

The sirens get dirty at significant points in their life.

Applejack hangs out with Rainbow Dash, who satisfies all her fetishes and loves it. Then two more ponies jump in.

Rainbow Dash is really gassy but has to hold it in.

Rainbow Dash and Applejack compete in the rain.

All four princesses have to use the toilet very badly.

Aria Blaze gives Rarity a swirlie.

Rainbow Dash hypnotizes Rarity into being her fetish slave.

Twilight, Sunset, and the other Equestria Girls fart in Pinkie Pie's new tub.