when you put baby powder in the crack of your ass and you aim your ass at a sleeping friend and fart on him and the powder flys at his face.
John: you i got a narlly idea.
ROB: what is it man?
JOHN: dick anus fell asleep go get me some baby powder.
ROB: lol for what?
JOHN: imma put some baby powder in the crack of my ass and fart on him.
ROB: lol iigh im down.
JOHN: werd operation powder fart