This guy goes to his doctor to ask him a question.

This guy goes to his doctor to ask him a question. The doctor says,
"What can I do for you?"
"Well doctor, I have a question for you. I masturbate, and I was
wondering how often is too often."
"Hmmm," the doctor says, "how often do you do it?"
"Three times a day." the man says.
"Yeah, that might be a little excessive. Have you considered finding
yourself a girlfriend?"
"I have a girlfriend, doctor", says the man.
"I mean a girlfriend for the bedroom as well...", the doctor says.
The man says "Oh, she is, that's not the problem. The problem is,
she doesn't like to do it during mealtimes."
==