waiwuh Share definition Flag Something a person says too much when they aren't really listening. It comes from "wait, what?" Also used to describe a person who doesn't listen to you when you are talking. Omg Sarah is such a waiwuh! she never listens to me when I talk! waiwuh by Beckley April 10, 2009 0 0 Get merch Get the waiwuh mug. Buy Now — $32.95 See more merch