Wubbabunk Share definition Flag 1. Excessive amounts of falsehood; 2. Unverified information; 3. To contained or be involved with largely unverified information. Man, this text book is wubbabunk. Wubbabunk by gerald McFannigan January 26, 2009 0 0 Get merch Get the Wubbabunk mug. Buy Now — $32.95 See more merch