National Grab Ass Day Share definition Flag May 18th is national grab ass day OH SHOOT MAN ITS MAY 18 NATIONAL GRAB ASS DAY WHERE IS MY GIRL????? National Grab Ass Day by OMB-On My Block Is The Stuff! May 10, 2019 0 0 Get merch Get the National Grab Ass Day mug. Buy Now — $32.95 See more merch