| Clue | Source | Date |
|---|---|---|
| Nonverbal signal during a conversation | LA Times Daily | 28 Jul 2025 |
| Crossed arms or yawning, e.g. | New York Times | 05 Jul 2024 |
| Nonverbal signal expressed via the face, body, voice, etc. | USA Today | 16 Jun 2024 |
| Missing one could cause an awkward situation | Universal | 30 Mar 2024 |