Grainy Surprise Share definition Flag When your fucking a girl from behind real hard and your dick accidently slips out of her pussy and tears into her ass. She yelped like a chihuahua when I gave her a Grainy Surprise. Grainy Surprise by FilthyMan69 April 20, 2006 0 0 Get merch Get the Grainy Surprise mug. Buy Now — $32.95 See more merch