While in midair (from a jump for example) you fart on your hand and slap the fuck out of someone next to you (generally the back of the head or the face.)
Jarome: "Can you believe it, that bitch didn't want to deepthroat me?"
Tim: "What did you do about it?"
Jarome: "I kept giving her Uncle Grubby's Specials until she did what I said."
Time: "Yeah thats what I would have done too."