Who hasn't woken up feeling a little hazy after a fun-filled Friday night?

Well, Katy Perry takes it to a whole 'nother level with her new video "Last Friday Night (TGIF)," which features the singer nerded-up in a Hangover-meets-John Hughes movie scenario as she tries to make sense out of what happened the previous evening. Did anyone lose a hunky, six-pack equipped dude? (If no one claims him, we say she gets to keep him.)

Between the Glee cameos, the Kenny G and Hanson appearances and the perky resurgence of Rebecca Black, the result is as memorable as the night before is not. Check it out and see if it doesn't put a little Day-Glo in day, yo.

RELATED: Check out Katy's other crazy video looks

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