| Clue | Source | Date |
|---|---|---|
| One fast turn over another? True! (3,1,4) | ||
| "For real!" | New York Times | 29 Dec 2023 |
| "No kidding!" | Eugene Sheffer | 31 May 2022 |
| ''No kidding!'' | Newsday | 12 Aug 2018 |
| ''No doubt about it!'' | Newsday | 11 Sep 2016 |
| 'I'm not lying!' | Eugene Sheffer | 20 Jun 2015 |
| "Believe you me!" | ||
| "I've got proof!" | ||
| "Believe you me!" | ||
| "Strange, but true!" | ||
| "No kidding!" | ||
| "Honest to goodness!" | ||
| "I swear!" | ||
| "No kidding!" | ||
| "For real!" | ||
| Phrase of affirmation | ||
| "No kidding" | ||
| "No fooling!" |