Sack of bitch Share definition Flag to be a bitch of proportions so large that a large sack is required to carry multiple bitches. Man, that bastard Berry is a fat sack of bitch Sack of bitch by Came-one|AKS June 30, 2004 0 0 Get merch Get the Sack of bitch mug. Buy Now — $32.95 See more merch