| Clue | Source | Date |
|---|---|---|
| "Open this door!" | Premier Sunday | 13 Jun 2021 |
| 'C'mon, open the door!' | New York Times | 31 Mar 2021 |
| Shout accompanying knocking | Wall Street Journal | 31 Aug 2020 |
| Pounder's cry | Thomas Joseph | 16 Nov 2019 |
| Command from a rapper | The New Yorker | 22 Jul 2019 |
| [Knock, knock] | New York Times | 02 Nov 2018 |
| Admission demand | LA Times Daily | 06 Jun 2018 |
| Admission demand | The Washington Post | 06 Jun 2018 |
| Admission demand | ||
| [Knock, knock] | ||
| 'Open up!' | Premier Sunday | 17 Apr 2016 |
| Rapper's demand | LA Times Daily | 17 May 2015 |
| Shout during a lockout | ||
| Rapper's demand | ||
| "Open up!" | ||
| "Open the door!" | ||
| Knocker's request | ||
| What "knock knock" may mean | ||
| Door banger's demand | ||
| Door banger's demand | ||
| Rapper's demand | ||
| Big Bad Wolf's demand |