A weak genre of music that's not at all technical or challenging to play. It consists of dressing up in boiler suits and masks and playing one fingered downtuned powerchords constantly, as Nu Metal groups are unable to play decent leads or solos.
See also: mallcore,shitknot,newb metal
Lamer: "Mudvayne is the heaviest shit evaqua!!!111oneoneone"
Dave: "I don't know about the heavy part, but they sure are shit."