| Clue | Source | Date |
|---|---|---|
| "No acting up!" | New York Times | 13 Sep 2025 |
| Words to a kid leaving for summer camp | ||
| Instruction to children left with a babysitter, perhaps | The Telegraph Cross Atlantic | 22 Nov 2024 |
| "Don't misbehave!" | Thomas Joseph | 04 Mar 2021 |
| Valediction reminder | The Washington Post | 05 Sep 2020 |
| Valediction reminder | LA Times Daily | 05 Sep 2020 |
| 'Act nice!' | Eugene Sheffer | 12 May 2018 |
| Nanny's reminder | Eugene Sheffer | 17 Jun 2016 |
| "Behave yourself!" | LA Times Daily | 18 Jan 2016 |
| "Behave yourself!" | ||
| 'Act nice!' | The Washington Post | 19 Nov 2015 |
| "Act nice!" | ||
| Parting words | ||
| "Don't misbehave!" | ||
| "No acting up!" | ||
| Behave yourself | ||
| Parent's reminder | ||
| Parent's reminder | ||
| "No horsing around!" | ||
| Mom's admonition | ||
| Mom's admonition | ||
| "No misbehaving!" | ||
| Parent's desperate request | ||
| Request from mom | ||
| "Lady, ___," |