| Answer | Crossword Clue |
|---|---|
| DOOR | Knock-knock joke barrier |
| PUN | Knock-knock joke, usually |
| PUNS | Knock-knock joke punchlines |
| RINGSABELL | "That knock-knock joke .." |
| PUN | Knock-knock joke payoff |
| PUN | Knock-knock joke, essentially |
| PUN | Knock-knock joke, e.g. |
| PUN | Knock-knock joke punchline, usually |
| ORANGE | Fruit in a knock-knock joke |
| PUN | Essence of a knock-knock joke |
| PUNS | Most knock-knock joke punch lines |
| WHOS | "... there?" (part of a knock-knock joke) |
| WHO | Word preceding the punch line of a knock-knock joke |
