A man has a headache and goes to see the doctor. The doctor says "I have bad news and good news. The bad new is that you have a brain tumor.
The good news is that we can do a brain transplant, and we have just admoitted a couple who was in a car accident. We can get you one of their brains. The male brain will cost your insurance company $100,000, and the female brain will cost $30,000."
The man says "I hate to be rude, but why does the male brain cost so much more than the female brain?" The doctor replies "Because the male brain has never been used."