Video: Katy Perry "Last Friday Night (T.G.I.F.)"

What did the California gurl get herself into? Figure out what happened the night before in her latest viral clip.

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Complex Original

Image via Complex Original

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Katy Perry tries the viral thing with her geeky new clip for "Last Friday Night (T.G.I.F.)" starring a cameo from Glee's Kevin McHale and, that's right, Rebecca Black playing Katy's BFF. Figure out what Ms. Perry got herself into last friday night.

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