dentist guitar 

Lossing or damaging a tooth when playing the guitar with your teeth

I chipped a tooth playing dentist guitar last night.

dentist guitar by Anonymous November 2, 2002

dentist guitar 

The kind of guitar your dentist would play. Typically a repetitive, badly played, two chord "song"

I just couldn't get into the practicing tonight. All I could play was dentist guitar

dentist guitar by Bungalow Bill December 23, 2001