A guy and his wife are out for a drive in the country. They pass a field where they see a bull mount six cows in a row, one after the other. The wife remarks: "Too bad you can't perform like that."
The husband replies: "I could... if I get to change cows every time!"
A doctor is meeting with a husband after examining his wife. The doctor tells him: "Your wife's diagnosis is uncertain. She either has Aids or she has Alzheimers."
The husband asks: "What should I do, doc?"
The doctor advises him: "Drive her five miles outside of town and drop her off. If she finds her way home, don't fuck her."