Excessive displays of upper body flesh, by men, at inappropriate times in an effort to show off a new fake tan, a new roided up
body, or a new trendy tattoo (i.e. barbed wire or Chinese power symbol); originated in homosexual communities, but is now commonly practiced by "alleged" heterosexuals at concerts, festivals, and other even more inapproprate settings.
It's 40 degrees, but those New Jersey pricks
are still peacocking around in jeans and no shirt. It's curious why a man would be peacocking at a Pantera concert... there aren't even any women here.