dillywop Share definition Flag A DiLLyWoP is when u take your penis and smack a girl in the facial area with it. "That Man with the large throbbing penis DiLLyWoPPed that girl and she liked it" dillywop by TidusX August 10, 2005 0 0 Get merch Get the dillywop mug. Buy Now — $32.95 See more merch