Bleacher Report Presents: Boom Shakalaka, Beast Mode, and the Origin of Popular Sports Phrases

Mysteries solved.

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Complex Original

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Have you ever wondered where popular sports phrases like "Boom Shakalaka," "Beast Mode," and "Second String" came from? Bleacher Report just did a little detective work and found out for you over here. It's interesting to see where those sports phrases—and so many others just like them—originated.

[via Bleacher Report]

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