Q: What s the difference between a monkey and a flea? A: A monkey can have fleas, but a flea can t have monkeys
Q: What's the difference between a monkey and a flea?
A: A monkey can have fleas, but a flea can't have monkeys.
Q: How can you most irritate a farmer?
A: By treading on his corn?
Q: Which is the strongest creature in the world?
A: The snail. It carries its house on its back.
Q: What do people do in a clock factory?
A: They make faces all day.
Q: How do you stop a sleepwalker from walking in his sleep?
A: Keep him awake.
怎样才能不让梦游者（sleepwalker）梦游（walk in his sleep）呢？最简单的方法就是不让他睡觉。虽然这不是治疗方法，但如果让梦游者醒着呢，他的确就不会去梦游了。