There was this eighty-year-old man who was seeing the doctor for a checkup. The doctor asked why he needed the checkup. The man was getting married next month to a girl 60 years his junior. The doctor tried to talk him out of the marriage, and it didn't work. However, the doctor suggested, "If you want your marriage to last, I say you at least take in a boarder." The old man agreed. The old man didn't see the doctor until they met at a fund-raiser a year later. The old man says, "Doc, congratulate me, my wife is pregnant." "That's good news," said the doctor. "I knew the boarder would help." "Oh," said the old man with a wicked grin, "and the boarder's pregnant as well."