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."