My name originated when I signed up for a Lego.com account many years ago. I had received an Mindstorms NXT for Christmas, and anyone familiar with the set will know that it has Bluetooth capabilities. As I was totally enthralled with the kit at the time, and the wireless Bluetooth function was my favorite feature, BluetoothBoy was born. Surprisingly, even though it's a name I came up with years ago, I still like it and will probably use it forever.
So no, it has nothing to do with my teeth, and nothing to do with Bluetooth cellphone earpieces.