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    This Graduating Class Shut It Down Performing Taylor Swift's "Shake It Off" At Their Ceremony

    ♫ Haters gonna hate hate hate♫

    The graduating class of Portsmouth High School in Portsmouth, New Hampshire, just went out with a bang by performing a choreographed flash mob routine to Taylor Swift's "Shake It Off."

    View this video on YouTube

    First, valedictorian Colin Yost made a commencement speech about embracing your inner nerd.

    Then at the end of the speech he started to break it down at the podium.

    He jumped into the crowd of his fellow students, and everyone joined in on an awesome choreographed routine.

    The best part was all 230-plus members of his graduating class got in on it, and managed to keep it a secret.

    Naturally, the crowd loved it.

    Great job, Portsmouth class of 2015!

    BuzzFeed has reached out to Yost for comment.