Jokes and riddles

1. Riddle: What goes up and down stairs without moving?
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2. Riddle: The more there is, the less you see.
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3. Riddle: What do you serve that you can't eat?
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4. Riddle: What can you catch but not throw?
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5. Riddle: Light as a feather, there is nothing in it; the strongest man can't hold it for much more than a minute.
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6. What question can you never answer "yes" to?
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7. What has a foot on each side and one in the middle?
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8. They come at night without being called and are lost in the day without being stolen.
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9. A barrel of water weighs 20 pounds. What must you add to it to make it weigh 12 pounds?
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10.Clara Clatter was born on December 27th, yet her birthday is always in the summer. How is this possible?
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