Cushion buster 

Polite banter to describe the enormity of someone's fart.

"Good Grief! That was a cushion buster if ever i heard one!"

Cushion buster by Ammason July 29, 2017

busted whoopie cushion 

a queef as a result of ass in the air doggy style sex

A few minutes after I busted on her ass, I heard the infamous busted whoopie cushion to let me know she fell asleep.

busted whoopie cushion by poopdick55 December 10, 2010