Beetlejuice

Dr. Beetle & Mr. Juice (2x7)

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Beetlejuice invents a cologne that changes the personality of anyone it comes in contact with into its polar opposite. When Lydia gets sprayed with it, she becomes a wild, prank-pulling criminal, and, taking Beetlejuice along for the ride, wreaks more havoc on the Neitherworld than BJ's ever been responsible for.