Schmamat Share definition Flag Substitute for the word dammit. Usually used if in an area in which dammit would be inappropriate or just to spice it up. Person 1- "She knows dude...she knows." Person 2- "GOD SCHMAMAT!!!!!" Schmamat by M.O.M January 13, 2009 0 0 Get merch Get the Schmamat mug. Buy Now — $32.95 See more merch