Piow piow Share definition Flag (Verb) The act of sexual intercourse, be it between two heterosexuals or two homosexuals. Speaking this word is usually accompanied by hand gestures around the groin Potter: yeah I got some piow piow tonight Piow piow by BJC May 1, 2005 0 0 Get merch Get the Piow piow mug. Buy Now — $32.95 See more merch