Fucking Cockmuncher Share definition Flag Generally a phrase used to express severe dislike of a certain event or phenomenon. Kid 1: We have a chemistry test today. Kid 2: Fucking cockmuncher, man. Fucking Cockmuncher by jewsruletheworld January 19, 2009 0 0 Get merch Get the Fucking Cockmuncher mug. Buy Now — $32.95 See more merch