| Clue | Source | Date |
|---|---|---|
| Classroom delivery, perhaps | New York Times | 12 Sep 2025 |
| Talking in class | Wall Street Journal | 17 Dec 2022 |
| Delivery made by mouth | The Washington Post | 22 Oct 2020 |
| Delivery made by mouth | LA Times Daily | 22 Oct 2020 |
| Class presentation, perhaps |