I saw Henry Rollins with Black Flag back in '83-'84 or so . He approached music as only a greco-roman wrestler could . The band blew the roof off the Lodge Hall just before the cops showed up and shut it down . In the parking lot some guy with a mohawk was sitting in the back of a Cadillac convertible that had an old {disarmed} army surplus 50 caliber machine gun mounted on the trunk . The neighbors were a little spooked . Rollins quieted all the hecklers by getting into their faces and challenging them to a push-up contest .