Gammy Cunt Share definition Flag A person who is acting like a total dick, or an arsehole and being inconsiderate. "You know that pint Alex was drinking, I pissed in it." "Oh my god, you gammy cunt !" Gammy Cunt by Abbyy182 February 26, 2009 0 0 Get merch Get the Gammy Cunt mug. Buy Now — $32.95 See more merch