When you get hurt so bad that the pain is equal to someone fucking your mother, usually used in past tense.
Guy 1:I got hit by a truck and broke my legs and right arm when I was young
Guy 2: Dam, that must have hurt like a motherfucker
Guy 2: Dam, that must have hurt like a motherfucker
by Irregulator July 03, 2011
by Daffy the Duck May 22, 2016