Whizzduke Share definition Flag The word for shitting and pissing at the same time. Often used like, 'Busting a whizzduke'. John: "Fucking shit man I just busted a whizzduke"Jesse: "This enrages my appetite" Whizzduke by AlanizWins April 9, 2010 0 0 Get merch Get the Whizzduke mug. Buy Now — $32.95 See more merch