Twat Walloper Share definition Flag Someone who you dislike, such as a douchebag. Good for any comeback. Douchebag: Oh man, I'm so good I am surronded by hot chicks. Normal human: Shut up twat walloper. Twat Walloper by Flash Magee November 15, 2009 0 0 Get merch Get the Twat Walloper mug. Buy Now — $32.95 See more merch