dumb high Share definition Flag blazing so much weed that you forget simple things (i.e. name, address, phone number, etc). "yeseterday i blazed two blunts after work on the way home and by the time i made it to my street i forgot which house i lived in. i was dumb high!" dumb high by F.A.I.M. July 28, 2006 0 0 Get merch Get the dumb high mug. Buy Now — $32.95 See more merch