doozy duce Share definition Flag A ginormous poo, larger and more fierce than a regular bowel movement, one that leaves you slightly dazed and a little lighter. dude: "Holy crap, I just dropped a doozy duce!" doozy duce by joelh March 18, 2008 0 0 Get merch Get the doozy duce mug. Buy Now — $32.95 See more merch