What you say when you've verbally or physically assaulted someone and they get mad and attack you. If you've ever had to say these 4 magical words, that means you suck monkey cock at doing pranks and probably don't even know what a prank is.
Mark continued to yell out "bro it's a prank!" as the frustrated black man attacked Mark for yelling out racial slurs at him.
by Chuds McGee December 1, 2015
Common saying in clickbait youtube videos invloving pranksters getting their ass beat, mostly in black neighborhoods.
Prankster: *steals random guys hat* Random Guy: *Beats up prankster* Prankster: Chill bro it's a prank
by RiceKing_rb26 June 13, 2017