| "Knock, knock" response |
Universal |
16 Apr 2025 |
| Question from behind a closed door |
LA Times Daily |
26 Feb 2025 |
| Second line of a child's joke |
New York Times |
08 Oct 2022 |
| Knock response |
LA Times Daily |
04 Aug 2019 |
| Knock response |
The Washington Post |
04 Aug 2019 |
| Knock response |
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| Response to 'Knock knock' |
New York Times |
26 Jul 2017 |
| Response to "Knock knock" |
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| Response to the sounds at the ends of the starred answers |
Wall Street Journal |
06 Sep 2016 |
| Question to a jokester |
Wall Street Journal |
31 Mar 2016 |
| Obligatory joke response |
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| Obligatory joke response |
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| Response to 18-Across |
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| Knock-knock question |
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