douche-o-potamus Share definition Flag a severe douche, a mega douchebag, one who has reached the pinnacle of douchedom, a simpleton with issues. Tim you are annoying the fuck out of me you fawking douche-o-potamus. Buyaa!!! douche-o-potamus by Fillmore Slim March 29, 2005 0 0 Get merch Get the douche-o-potamus mug. Buy Now — $32.95 See more merch