ducklefart Share definition Flag A person, who in this case, can't keep themselves away from peanut butter. Where did the 1lb jar of peanut butter go? I don't know, ask the ducklefart. ducklefart by Levi Randolph-Roble May 17, 2008 0 0 Get merch Get the ducklefart mug. Buy Now — $32.95 See more merch