- Season 9 Episode 7 Fonzie, the Substitute
Fonzie substitutes for Roger in his hygiene class, and, as a prank, the students hide the lesson plan and tell Fonzie they're learning about sex. Roger is later informed that he will be fired as a teacher as a result of Fonzie's teachings.
First Air Date: Jan 01, 1970
Last Air date: Jan 01, 1970
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