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.
| Creator | Garry Marshall |
|---|---|
| Actor | Henry Winkler, Tom Bosley, Marion Ross |
| Country | United States of America |
| Production | Miller-Milkis Productions |