What does everyone know how to open but not how to close?

What does everyone know how to open but not how to close?

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A precious fluid, thicker than water.

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What is often returned but is never borrowed?

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I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.

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A tree with 5 branches, no leaves and no fruits

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You should keep it as straight as can be, yet very few do. Most of the time it's slightly bent or curved. Your sadness usually causes it to bend further, but don’t bend it for too long or it may never be able to fully straighten out again. What is it?

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Riddle of the Day

Mar 14, 2026

They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.

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