40 Knock Knock Jokes So Bad They're Brilliant

A knock knock joke is a short call-and-response gag: one person says "Knock knock," the other bites with "Who's there?", and a name sets up a pun-loaded punchline. Below are 40 knock knock jokes worth stealing, plus how the format works. Want an endless supply of quick gags? Our Dad Joke Generator rolls a fresh groaner every tap.

How does a knock knock joke work?

A knock knock joke is a scripted little duet. One person opens with "Knock knock," the other is honour-bound to reply "Who's there?" You answer with a name or word, they echo it back with "…who?", and you spring the punchline — almost always a pun that twists that name into something unexpected. The whole joke rides on the setup being a trap: your victim has to play along, which means they walk straight into the pun. Deadpan delivery and a straight face do the rest.

40 knock knock jokes

1. Knock knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's cold out here.

2. Knock knock. Who's there? Boo. Boo who? Don't cry, it's only a joke.

3. Knock knock. Who's there? Tank. Tank who? You're welcome.

4. Knock knock. Who's there? Cows go. Cows go who? No, cows go moo.

5. Knock knock. Who's there? Nobel. Nobel who? No bell, that's why I knocked.

6. Knock knock. Who's there? Interrupting cow. Interrupting c— MOO.

7. Knock knock. Who's there? Atch. Atch who? Bless you.

8. Knock knock. Who's there? Olive. Olive who? Olive you and I miss you.

9. Knock knock. Who's there? Harry. Harry who? Harry up, it's freezing out here.

10. Knock knock. Who's there? Dozen. Dozen who? Dozen anybody want to let me in?

11. Knock knock. Who's there? Wooden shoe. Wooden shoe who? Wooden shoe like to hear another joke?

12. Knock knock. Who's there? Ice cream. Ice cream who? Ice cream if you don't let me in.

13. Knock knock. Who's there? Figs. Figs who? Figs the doorbell, it's been broken for weeks.

14. Knock knock. Who's there? Water. Water who? Water you doing? Just open the door.

15. Knock knock. Who's there? Alpaca. Alpaca who? Alpaca the suitcase, you load the car.

16. Knock knock. Who's there? Needle. Needle who? Needle little help getting through this door.

17. Knock knock. Who's there? Anita. Anita who? Anita borrow a pen for a second.

18. Knock knock. Who's there? Yah. Yah who? No need to shout, I'm right here.

19. Knock knock. Who's there? Justin. Justin who? Justin time for tea.

20. Knock knock. Who's there? Cargo. Cargo who? Car go "beep beep," that's all.

21. Knock knock. Who's there? Amish. Amish who? You're a shoe? That's odd.

22. Knock knock. Who's there? Spell. Spell who? W-H-O.

23. Knock knock. Who's there? Honey bee. Honey bee who? Honey bee a dear and put the kettle on.

24. Knock knock. Who's there? Kanga. Kanga who? Actually, it's kangaroo.

25. Knock knock. Who's there? Ya. Ya who? Wow, glad you're excited to see me too.

26. Knock knock. Who's there? Snow. Snow who? Snow use, I've forgotten my key again.

27. Knock knock. Who's there? Doris. Doris who? Doris locked, that's why I'm knocking.

28. Knock knock. Who's there? Broken pencil. Broken pencil who? Never mind, it's pointless.

29. Knock knock. Who's there? Iva. Iva who? Iva sore hand from knocking so long.

30. Knock knock. Who's there? Wa. Wa who? Glad you're having fun, but let me in.

31. Knock knock. Who's there? Beets. Beets who? Beets me, you tell me the punchline.

32. Knock knock. Who's there? Butter. Butter who? Butter believe it's me at the door.

33. Knock knock. Who's there? Owls. Owls who? Yes, they do.

34. Knock knock. Who's there? Canoe. Canoe who? Canoe help me carry the shopping in?

35. Knock knock. Who's there? Adore. Adore who? Adore is between us — open it up.

36. Knock knock. Who's there? Cash. Cash who? No thanks, I prefer almonds.

37. Knock knock. Who's there? Théo. Théo who? Théo only one who can let me in.

38. Knock knock. Who's there? Wanda. Wanda who? Wanda go grab a coffee?

39. Knock knock. Who's there? Police. Police who? Police hurry up, I'm bursting for the loo.

40. Knock knock. Who's there? Hatch. Hatch who? Cover your mouth next time.

What makes a knock knock joke land?

The best knock knock jokes share three things: a name that hides a phrase, a clean pun that only clicks on the reveal, and a victim who can't escape the format. The comedy is built into the ritual — once someone says "Who's there?" they're committed, and half the fun is watching them realize where it's going. Short is better, deadpan is essential, and the groan is the goal, not a failure.

How do you make up your own knock knock jokes?

Start with the punchline, not the knock. Pick a common phrase, then find a name or word that sounds like the first bit of it — "lettuce" for "let us," "Anita" for "I need a." Wedge that into the name slot and the format does the rest. If you get stuck, our Dad Joke Generator is a great warm-up: the same pun logic powers both, so a few taps will get your brain firing.

Want a bottomless supply of quick one-liners to fire back with? Tap the Dad Joke Generator and roll a fresh groaner every single time.