Sherlock Holmes and Dr. Watson are going camping. They pitch their tent under the stars and go to sleep. Sometime in the middle of the night Holmes wakes Watson up.

Holmes: "Watson, look up at the stars, and tell me what you deduce."

Watson: "I see millions of stars and even if a few of those have planets, its quite likely there are some planets like Earth, and if there are a few planets like Earth out there, there might also be life. What does it tell you, Holmes?"

Holmes: "Watson, you idiot, somebody has stolen our tent!"

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課本上到現在最好笑的笑話.