There's still quite a number of people who keep calling me a "metalhead".
In my book, "metalhead" is someone who listens to (almost) nothing but metal and in more extreme case lives/breathes for metal.
Having that I'm very open-minded when it comes to music and that I don't particularly care for metal as a phenomenon that much any more, this label has grown to be of a patronising kind to me and it bothers me when someone insists on applying it to me.