fat as hell Share definition Flag To be so fat that very little is bigger than you and there is little chance you will ever move from the spot you are at. Rusty: You mean my mama is white? Aunt Lil: And fat as Hell! ha ha ha! fat as hell by GimpBalls June 11, 2011 0 0 Get merch Get the fat as hell mug. Buy Now — $32.95 See more merch