The latest hot YouTube video comes from the Tweeter Center parking lot, where some fans started beating the ever-loving hell out of each other before a 311 concert. Watch and learn the physical signs of the bonehead - their shirtless, tattoed torsos, their sweaty flesh, and their ability to take a punch:

As WHDH notes, a guy kept yelling, "This is going on YouTube, baby!" That must be a sign of bonehead evolution. They've discovered technology! Their mommas would be so proud. The comments under the YouTube video blame much of the behavior on residents of Attleboro. Attleboro might have something to say about that.

Mansfield's police chief, Arthur O'Neill, is not amused: "It's one patron taking a video of a bunch of morons acting like morons." O'Neill said the video was a sign of "societal breakdown." But drunken jackasses have always been at concerts. Exhibit A: The douchebag who started the fight at the Boston Pops. YouTube just exposes these boneheads to all the world so non-fighters can make a note and stay away from them.