Grimming Share definition Flag Grimming means the opposite of grooming. In which a minor "grooms" an adult. Prisoner A: So what are you in for? Prisoner B: I'm in for grimming a mentally unstable 21 year old Grimming by GrimmerRumbl3 November 10, 2020 0 0 Get merch Get the Grimming mug. Buy Now β $32.95 See more merch