bobble head boy Share definition Flag A bobble head boy is someone who has a big head but has no brain, they call people stupid names like narc. Person 1: omg they are such a bobble head boyperson 2: i know right, they’re so stupid bobble head boy by imsocool16 November 23, 2021 0 0 Get merch Get the bobble head boy mug. Buy Now — $32.95 See more merch