Muffin Fuck Share definition Flag An exclamatory remark that one makes after making a wrong move in tetris. "MUFFIN FUCK. I SHOULD HAVE TURNED THAT BLOCK AROUND" Muffin Fuck by Barri the Clown December 23, 2008 0 0 Get merch Get the Muffin Fuck mug. Buy Now — $32.95 See more merch