wanksponge Share definition Flag A sponge one keeps by his bedside to wank upon so as not to cause a mess. Tim: "Hey derek, look at my bloody wanksponge!" Derek: "Man that shit is ugly" wanksponge by Alex G Thomas January 19, 2008 0 0 Get merch Get the wanksponge mug. Buy Now — $32.95 See more merch