Idiot dumb Share definition Flag Someone that isn't just dumb or just an idiot but they're the dumbest idiot you've ever met. "Paris Hilton, Jessica Simpson, and Heidi Montauge are HUGE idiot dumbs" Idiot dumb by you're not fucking brutal July 13, 2009 0 0 Get merch Get the Idiot dumb mug. Buy Now — $32.95 See more merch