A man, typically in his twenties, who tries to act as extreme (or XTREME as he would say) as possible but doesn't realize he is a total douche. Usually found drinking energy drinks or alcohol and listening to shitty tough-guy bands like Disturbed, Slipknot, Nickelback, Creed or any Metallica made after 1990. Often times, to up the ante on their XTREME factor, they will act like they are MMA fighters and wear Tapout brand clothing. Really, they are just total losers.
There goes that dudebro again, crushing beer cans on his forehead and listening to Disturbed, he's obviously one bad motherfucker.