| Clue | Source | Date |
|---|---|---|
| "Sure about that?" | Thomas Joseph | 07 Feb 2022 |
| “Um, duh!” | Wall Street Journal | 19 Jan 2021 |
| Sarcastic 'Could that be more obvious?' | The Washington Post | 11 Nov 2019 |
| Sarcastic "Could that be more obvious?" | LA Times Daily | 11 Nov 2019 |
| "Sure about that?" |