70 year-old Mrs Potts went to the doctor for her annual check up. He
told her she needed more activity and recommended sex three times a
week. She said to the doctor, "Please, tell my husband." The doctor went
out to the waiting room and told Mr Potts that his wife needed to have
sex three times a week.
The eighty-year-old husband replied, "Which days?"
"How about Monday, Wednesday, and Friday?"
"I can bring her on Monday and Wednesday," the man said, "but on Fridays she'll have to take the bus."