1. Why are people tired on April Fool's Day?
   1. Because they have just had a long March
2. What weather do mice and rats fear?
   1. When it's raining cats and dogs
3. When do dogs refuse to follow their masters?
   1. When their masters go to the flea market.
4. What question can never be answered by “yes”?
   1. Are you asleep?
5. What tree is always very sad?
   1. Weeping willow.
6. When can you get water with a net?
   1. When water is turned into ice.
7. Why is the pig always eating?
   1. He's making a hog of himself.
8. What's the longest word in the world?
   1. Smiles. Because there's a mile between the letter 's'.
9. What question is that to which you must always answer "yes"?
   1. "What does y-e-s spell?"
10. Where were you when the power was cut off?
    1. In the darkness.