I get things from time to time from urbandictionary.com and found this funny:
A person who wears a [bluetooth] wireless earpiece everywhere they go to seem trendy and important. Places to spot bluetools include movie theaters, malls, restaurants, gyms, grocery stores and cars.
Bluetool: Heyyy, how are you?
Megan: I'm great, and yourself?
Bluetool: Oh, sorry Megan. I wasn't talking to you, I'm on a call. Bluetooth.