Muthafartin Share definition Flag A Strange Insult, implying you Plan to kill their mother using only your rear gas. Bob: Hey bill, you suck.Fred: IMA MUTHAFARTIN YOU FOR THAT.Bob: wha...? Muthafartin by Mr. METHAFARTIN October 7, 2010 0 0 Get merch Get the Muthafartin mug. Buy Now — $32.95 See more merch
