"Band of Freaks" (or "bag of fuck"). Used to describe kids who listen to shitty metal bands and have bad hygiene. Usually have greasy/dyed/long-ish hair and wear darker clothes because they're "nonconformists" (ha, right). Very similar to "emo", but they probably want to slit other people's wrists.
Damn, if I had a huge cock like that I sure as hell wouldn't mind being called a B.D.B. and would probably show it off any time someone asked to see it.