greasy granny Share definition Flag A greasy granny is where you coat your tongue in Icy-Hot and then give someone a rim job or oral sex. Yesterday i gave the old mrs. henderson the juiciest greasy granny i've given anyone. greasy granny by M. Fishel April 8, 2009 0 0 Get merch Get the greasy granny mug. Buy Now — $32.95 See more merch