gwag (verb) Share definition Flag 1) to cum 2) to prematurally satisfy ones self 3) to get it on wit the opposite of sexes... "I gwaged in her eye" "that cream looks like gwag" gwag (verb) by fntiger July 15, 2004 0 0 Get merch Get the gwag (verb) mug. Buy Now — $32.95 See more merch