Dr. Grumpy: "What can I do for you?"
Mr. Scrum: "I'm having memory problems that keep getting worse. I'm concerned they're related to all my head injuries."
Dr. Grumpy: "How many head injuries have you had?"
Mr. Scrum (pulls out paper): "Uh, 24 in the last 15 years, where I've lost consciousness, and a few more where I've only seen stars. My memory seems to get worse with each one."
Dr. Grumpy: "That's a lot of head injuries. How did you get them?"
Mr. Scrum: "I play rugby every weekend. What can I do to stop having head injuries?"
Dr. Grumpy: "Have you considered quitting rugby?"
Mr. Scrum: "Do you think that would help?"