Wahoopidong Share definition Flag n. a doofus; one who is goofy with connotations of cuteness; a chronically inept person. John: I locked my keys in my car.Mary: Oh, not again, you great wahoopidong! Wahoopidong by Hannabean July 22, 2009 0 0 Get merch Get the Wahoopidong mug. Buy Now — $32.95 See more merch