crumblies Share definition Flag Another word to call old people. Crumblies is the funniest word to ever call old people. Me: "Whoa! Look at those crumblies!" Crumblies: "why we outta catch you and kik ur arse!" crumblies by CoCoNutBongoMan November 16, 2005 0 0 Get merch Get the crumblies mug. Buy Now — $32.95 See more merch