Browntooth

Browntooth technology is what crazy bums and tweekers talk to themselves on. It's a completely wireless technology, there is no external ear piece. Rather, the lone brown 'poop' tooth thats left in their mouth is the primary communication device.

Crazy, Tweeker Bum walking down the street carrying on a conversation with him/herself. You look, but no ear piece, and no one else around. You say, "Ahhh, that dude must be talkin' on his Browntooth ."