blast-a-dookie Share definition Flag To defecate with urgency and explosive force. To expel fecal matter in a timely fashion. Every morning after a cup of coffee and a cigarette,I have to blast-a-dookie. blast-a-dookie by J.L.Willis July 26, 2003 0 0 Get merch Get the blast-a-dookie mug. Buy Now — $32.95 See more merch