rim groper Share definition Flag A play on the phrase 'grim reaper'. A person who caresses (either orally or using other body parts) another person's anal rim. "After last night with that bird he looks like the grim reaper". - "don't you mean a rim groper?". rim groper by Barndogg November 11, 2005 0 0 Get merch Get the rim groper mug. Buy Now — $32.95 See more merch