Substitute Creature
S4:E41
1991
IMDb
Lydia makes a (foolish) wish that Beetlejuice could teach her class for a day, and he grants it. He takes Lydia, Claire, Bertha and Prudence on a trip to ""Historyland"" in the Neitherworld, where they learn a bit more than history--like never trust a professor in a striped suit.