Slap ass month Share definition Flag In the whole month of November u get a free slap on any girls or guys ass. Big or small you can slap/grab it. "I just slapped Shannon's ass, its national slap ass month." Slap ass month by Ehedhxuduehx October 8, 2019 0 0 Get merch Get the Slap ass month mug. Buy Now — $32.95 See more merch