Granny Stamp Share definition Flag A lipstick mark left by an old woman who might or might not be a grandmother. Eww! That granny stamp was moist!Did you just get granny stamped? Granny Stamp by Racoons In A Trenchcoat October 16, 2019 0 0 Get merch Get the Granny Stamp mug. Buy Now — $32.95 See more merch