Smashed her gash Share definition Flag to smash a girls gash is to hurt her vagina during sexual intercourse by being to rough/voilentl. "man i fucked her so hard, i smashed her gash" Smashed her gash by ooooox3 February 25, 2009 0 0 Get merch Get the Smashed her gash mug. Buy Now — $32.95 See more merch