Watch Students 'Shake It Off' at High School Graduation Flash Mob

A valedictorian masterminded a flash mob for the graduating class of Portsmouth High School in New Hampshire with Taylor Swift's hit, 'Shake It Off.'

One valedictorian has a simple message -- Shake it off!

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Colin Yost masterminded a flash mob for the graduating class of Portsmouth High School in New Hampshire. By using Taylor Swift’s massive hit “Shake It Off,” he created an impromptu dance-off with his classmates when he was giving his speech.

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Over 200 graduates danced in their caps and gowns to song, while Yost ended his speech saying, “all you have to do is shake it off.”

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