dickhead
A guy that is usually bald or with very short hair, chubby(may be very muscular),and most often seen with camo shorts going past the knees.  Most often seen in Hardcore bands doing pissed off sounding vocals or playing a distorted guitar riff with a very simple rhythm that fails to go past the 5th fret.
Jamey Jasta - Hatebreed

Sean Martin - Hatebreed

Mitts - Madball

Dave Peters - Throwdown

guy1 : DUDE OMG HATEBREED FUCKIN RULES

guy2  : i can't beleive you listen to that dickhead music