shizzow Share definition Flag Shizzow: Another form of "Booyah!" or "W00t!", also, a country formed by me and my 2 friends in Biology class. "Shizzow, how do you like me now?!" shizzow by Chris G. October 23, 2004 0 0 Get merch Get the shizzow mug. Buy Now — $32.95 See more merch