doohicki Share definition Flag Dookicki: something (Crap) that would be left on the end of a penis after anal sex. So there I was rogering this nice young thing in the ass. When I pulled out...There was a "doohicki" on the end of my penis..... doohicki by dansouthern4u September 25, 2011 0 0 Get merch Get the doohicki mug. Buy Now — $32.95 See more merch