Top definition
The act of being addicted to the best band of any kind ever created, the one and only Metallica.

Metallica Members are/were James Hetfield(Vocals Rhythm Guitarist), Lars Ulrich(Drummer), Dave Mustaine(Original Lead Guitarist), Kirk Hammett(New Lead Guitarist), Cliff Burton(original Bassist), Jason Newstead(Replaced Burton When Burton Died), And Robert Trujillo(Current Bassist).
This music kicks more ass than Rush and Van Halen combined. I guess I am now a METALLICAHOLIC!
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