Why does a ballpoint pen stop writing when it falls on the floor?

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In everyday life, a tiny cable tie can often be surprisingly useful!

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This is writing? It's clearly sword practice!

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The first time I saw such a fun pen! Am I the last one to know?

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[Calligraphy] [M&G K35] Everyone Used This Pen

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What it feels like to write the Milky Way in one stroke! 【3D Jelly Pen】

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The caterpillar imitating the green snake (Ochre-striped moth) is so cute

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How does a pen that looks like a duckbill feel when writing?

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The Manufacturing Process of Toilet Seats

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The Irresistible Mechanics of “Men’s Speed Bumps”

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Why is this pen so strange?

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Ancient Pencil Sharpeners

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The Irresistible Mechanics of the “Men’s Speed Bump”

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“Fire Burns the Street Sweeper—What Kind of Yama-Like Behavior Is This?”

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Fun Science Experiment

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Wavy pen? I heard that people who write with this pen will fail!

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A Roundup of the Strangest Sex Facts!

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Random Trivia

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This is not a pencil case, this is a space station

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Here are some little tips that might come in handy for you!

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