The state of being that results after an individual has become SUCH a
heavy metal fan, that they lose their sense of reality. Their entire life becomes a "Metalfest" of just sitting in their apartment or parent's basement and headbanging to any form of heavy
metal all day
long.
"Hey, have you seen jake?"
"
Nah, I think he was up all night watching
Headbanger's Ball and listening to Rammstein."
"Damn man, that
guy is just metally retarded."