Gummed Share definition Flag Verb: The act of oral sex with an elderly person, who forgot to put their dentures in, while they gnaw and bite on the other person's genitals. "Dude, last night I got gummed!" Gummed by Jewsaint April 5, 2010 0 0 Get merch Get the Gummed mug. Buy Now — $32.95 See more merch