When I try to picture a metalhead girl, this is the image I get:
I imagine some pseudo-goth girl who sits in the cafeteria by herself, listening to her ipod and scowling at people. She doesn't have a facebook, but she has a myspace. Half of her friends are bands, and her profile lags because it's filled with images, and the layout is black with lime green text. She doesn't care what you think about her, and she thinks she's smarter than everyone else, so they're not worth her time. And she listens to awful bands, and tries to pass off her tastes as unique and hardcore.