Blue in the Face

Raven must get a good grade on a science project, or else she'll be grounded and she'll have to miss going to the Blue Rain concert with Devon. When Victor gets a new paper shredder, he becomes totally obsessed with it. Meanwhile, Cory's intelligent friend William needs a makeover. Raven makes a deal with William, to trade projects. William does his share of the deal, but Raven had forgotten about her part. When William and Cory get mad, they shred the project, which Raven had to fix up a night. Asleep from lack of sleep, she groggily and mistakenly tells Victor that her paper is trash. He shreds the paper and Raven gets mad. Then by accident at school, she ends up creating an unstable chemical reaction in the science lab, which causes Raven and Victor (who had come to bring Raven her formula project paper) to get covered in some sort of blue substance that will not wash off for a few days. Raven's grounded until her grades improve and Devon comes over to cheer her up. Meanwhile, Cory meets a girl named Madison, but she does not like William, and Tanya asks Cory if he wants to be with one who hates his best friend. In the end, Cory chooses William over Madison.

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S02E10 - Spa Day Afternoon