John J.

A man goes to the doctor. A week later he gets a call and is told he needs to come in to see the doctor for the diagnosis. The doctor walks in while the patient is waiting, and says "Sir, I have some bad news." "Sir! Sir!", the patient looks up, "what?" "You have to stop masturbating," said the doctor, shocked, the patient asks "why?!?", to which the doctor replied "because I am trying to talk to you here!"

rating: PG-13