Happy Days Season 9 Episode 7 Fonzie, the Substitute ( Air Date 1981-11-17 ) Genre Comedy category. Overview "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.".
Happy Days Season 9 Episode 7 Fonzie, the Substitute
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- Watch: Happy Days Season 9 Episode 7 Fonzie, the Substitute on CWR-CRB
- Stars: Henry Winkler, Tom Bosley, Marion Ross, Anson Williams, Scott Baio, Ted McGinley, Erin Moran
- Director: Rich Correll, Edward K. Milkis, Garry Marshall
