Washing your dick in the sink Share definition Flag Doing an activity that is pointless, A Waste of time, Doing something that achieves nothing. "I think she likes me.""Dude, she's a prick tease you're just washing your dick in the sink." Washing your dick in the sink by Marty Mac23 November 2, 2013 0 0 Get merch Get the Washing your dick in the sink mug. Buy Now — $32.95 See more merch