Two students talk: "What are you reading?" "Quantum physics theory book." "But why are you reading it upside-down?" "It makes no difference anyway."

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Q: Did you hear oxygen went on a date with potassium? A: It went OK.

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What did E.T.'s mother say to him when he got home? "Where on Earth have you been?!"

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Schrödinger's cat walks into a bar and doesn't.

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Q: What should you put on the tomb stone of a mathematician? A: He didn't count with this...

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