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A person who thoroughly enjoys metal, rock, alternative or other headbanging music but doesn't express it or know it yet.
Alyssa loved rock n roll but kept it a secret for fear of what her parents or friends may think. She was a closet metalhead.

Pop music became repetative and annoying after a while, so Don turned to classic rock and found that he loved it. He was a closet metalhead all along.
by AngieInRealLife March 20, 2012
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