To:

Location: sat on a wall, waiting for a bus.
Dear Mr Bluetooth,
You think you look connected and important.
Everyone thinks you look like a totally self important jerk.
Here are some clues, if you are waiting for a bus, haven't washed your clothes in a while and ARE NOT EVEN TALKING on the thing, you are not that important.
Unless you are driving or I don't know, emergency landing a helicopter, delivering a baby or fire juggling you don't need to walk around with the thing stuck to your head.
You are not in a video game or science fiction film.
Save your money, maybe use it to buy some laundry detergent and deodorant.
You have been told, don't annoy me again.
A