When my brothers and I were little we all had Duncan yo-yos that we tried to do tricks with. But I would have never guessed in a million years that someone could do tricks like this.   I'm still trying to do "walking the dog" for Cripes sake.    

Kuba Morc/Getty Images
Kuba Morc/Getty Images
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A guy from California named Gentry Stein won the yo-yo world championship in the Czech Republic on Saturday.  And you can check out his winning routine here.  It's about three minutes of tricks you'll never be able to do in your lifetime.

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