One who wears a blue-tooth ear piece at all times, even when they're not using a phone or it is inappropriate to use a phone, (i.e. movies, restaurant, car) simply to have the appearance of being sophisticated and trendy.
Dude, that guy over there is a total blue-tool, just look at his ear piece.
The knob that is yapping loudly on his blue tooth while his eyes dart around hoping to find someone listening in to overhear him “move and shake” because all the difference makers are in a Wal-Mart midmorning in their khakis yapping on their cell phones.
Guy #1: Check out this douche yapping on his cell phone.