doser head Share definition Flag A complete idiot, also known for being very silly or stupid. It's misspelled for loser, but you add the head on b/c they're idiot's. Jamie, you are a complete doser head. You need to go home. doser head by doser head July 2, 2005 0 0 Get merch Get the doser head mug. Buy Now — $32.95 See more merch