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Science Explains: Why is Justin Bieber Always Squinting?

By Becky Ferreira Dec 3, 2013

9 of 12

Justin Bieber Uses Onions As Stress Balls

Justin Bieber was raised by a single mother working two jobs, so he didn't have access to a lot of luxuries before he was famous. So instead of buying those squishy stress balls to handle his anxiety, he improvised with onions, and still does to this day. When he needs to cool down during a performance or interview, he takes out the ole onions and gives them a mighty strong squeeze, which releases the onions' famously tear-inducing propanethiol S-oxide mixture. To hold back the waterworks, he squints. Case closed.

Tags: slideshows, justin bieber, celebs, science explains, squinting

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About the Author
Becky Ferreira

Becky Ferreira is a writer, performer, and raptor based in New York.

Wanna contact a writer or editor? Email contribute@sparknotes.com.