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.
| Name | Type | Role | |
|---|---|---|---|
| Ralph R. Farquhar | Writer | ||
| Ceil Cabot | Guest Star | ||
| Elizabeth Keifer | Guest Star | ||
| Scott Bernstein | Guest Star | ||
| Jerry Paris | Director |