Wizzduke Share definition Flag The word for shitting and pissing at the same time.Often used like, 'Busting a wizzduke'. John: "Fucking shit man I just busted a wizzduke"Jesse: "This enrages my appetite" Wizzduke by The Master Wisdom November 25, 2010 0 0 Get merch Get the Wizzduke mug. Buy Now — $32.95 See more merch