Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's cold out here!
Knock-knock jokes: 60 funny classics and new ones
Knock, knock. Who's there? Sixty of the funniest knock-knock jokes we could find a door for. Start with the timeless classics, move on to easy knock-knock jokes for preschoolers and kindergarteners, then try the silly ones and the groan-worthy puns that grown-ups secretly enjoy. Each joke is written out line by line, so you can read it aloud with a partner, copy it into a text or teach it to a child who will tell it to you forty times before bedtime.
All jokes 60
Classic knock-knock jokes 15
Knock, knock. Who's there? Boo. Boo who? Don't cry, it's only a joke.
Knock, knock. Who's there? Interrupting cow. Interrupting cow wh— MOO!
Knock, knock. Who's there? Banana. Banana who? Knock, knock. Who's there? Banana. Banana who? Knock, knock. Who's there? Orange. Orange who? Orange you glad I didn't say banana?
Knock, knock. Who's there? Tank. Tank who? You're welcome!
Knock, knock. Who's there? Cow says. Cow says who? No, silly, a cow says moo!
Knock, knock. Who's there? Atch. Atch who? Bless you!
Knock, knock. Who's there? Olive. Olive who? Olive you, and I missed you too!
Knock, knock. Who's there? Harry. Harry who? Harry up and open the door!
Knock, knock. Who's there? Ice cream. Ice cream who? Ice cream every time I watch a scary movie!
Knock, knock. Who's there? Little old lady. Little old lady who? Wow, I didn't know you could yodel!
Knock, knock. Who's there? Who. Who who? Is there an owl in there?
Knock, knock. Who's there? Doctor. Doctor who? Wait, you've seen the show?
Knock, knock. Who's there? Lena. Lena who? Lena a little closer and I'll tell you.
Knock, knock. Who's there? Wooden shoe. Wooden shoe who? Wooden shoe like to hear another joke?
Easy knock-knock jokes for preschool and kindergarten 15
Knock, knock. Who's there? Cash. Cash who? No thanks, I'll have peanuts.
Knock, knock. Who's there? Honeydew. Honeydew who? Honeydew you want to come out and play?
Knock, knock. Who's there? Owls say. Owls say who? Yes, they do!
Knock, knock. Who's there? Ben. Ben who? Ben knocking forever, please open up!
Knock, knock. Who's there? Ya. Ya who? Wow, I didn't know you were a cowboy!
Knock, knock. Who's there? Figs. Figs who? Figs the doorbell, it's broken!
Knock, knock. Who's there? Luke. Luke who? Luke through the peephole and find out!
Knock, knock. Who's there? Anita. Anita who? Anita borrow a pencil.
Knock, knock. Who's there? Water. Water who? Water you waiting for? Open the door!
Knock, knock. Who's there? Abby. Abby who? Abby birthday to you!
Knock, knock. Who's there? Iva. Iva who? Iva sore hand from all this knocking!
Knock, knock. Who's there? Howl. Howl who? Howl you know unless you open the door?
Knock, knock. Who's there? Beets. Beets who? Beets me!
Knock, knock. Who's there? Alpaca. Alpaca who? Alpaca the suitcase, you load the car.
Knock, knock. Who's there? Butter. Butter who? Butter let me in before I melt!
Silly knock-knock jokes 15
Knock, knock. Who's there? Nobel. Nobel who? No bell, that's why I knocked.
Knock, knock. Who's there? Spell. Spell who? W-H-O.
Knock, knock. Who's there? Hawaii. Hawaii who? I'm fine, Hawaii you?
Knock, knock. Who's there? Canoe. Canoe who? Canoe help me with my homework?
Knock, knock. Who's there? Broken pencil. Broken pencil who? Never mind, it's pointless.
Knock, knock. Who's there? Déjà. Déjà who? Knock, knock.
Knock, knock. Who's there? Says. Says who? Says me, that's who!
Knock, knock. Who's there? Justin. Justin who? Justin time for dinner!
Knock, knock. Who's there? Annie. Annie who? Annie thing you can do, I can do better.
Knock, knock. Who's there? Tennis. Tennis who? Tennis five plus five.
Knock, knock. Who's there? Yukon. Yukon who? Yukon say that again!
Knock, knock. Who's there? Theodore. Theodore who? Theodore wasn't open, so I knocked.
Knock, knock. Who's there? Kanga. Kanga who? Actually, it's kangaroo.
Knock, knock. Who's there? Police. Police who? Police let us in, it's chilly out here!
Knock, knock. Who's there? Control freak. Now you say, "Control freak who?"
Groan-worthy knock-knock jokes for adults 15
Knock, knock. Who's there? Nana. Nana who? Nana your business.
Knock, knock. Who's there? Radio. Radio who? Radio not, here I come!
Knock, knock. Who's there? Leaf. Leaf who? Leaf me alone!
Knock, knock. Who's there? Mustache. Mustache who? I mustache you a question, but I'll shave it for later.
Knock, knock. Who's there? Adore. Adore who? Adore is between us. Open up!
Knock, knock. Who's there? Wanda. Wanda who? Wanda hang out later?
Knock, knock. Who's there? Al. Al who? Al give you a hug if you open this door.
Knock, knock. Who's there? Euripides. Euripides who? Euripides jeans, you pay for them.
Knock, knock. Who's there? Candice. Candice who? Candice door open, or what?
Knock, knock. Who's there? Philip. Philip who? Philip my glass, I'm thirsty.
Knock, knock. Who's there? Arthur. Arthur who? Arthur any more cookies in the jar?
Knock, knock. Who's there? Dozen. Dozen who? Dozen anybody want to let me in?
Knock, knock. Who's there? Wire. Wire who? Wire you asking? Just open up.
Knock, knock. Who's there? Ketchup. Ketchup who? Ketchup with me and I'll tell you.
Knock, knock. Who's there? Woo. Woo who? Calm down, it's just a joke.
How a knock-knock joke works
Every knock-knock joke follows the same five-line script. The teller says "Knock, knock." The listener answers "Who's there?" The teller gives a name or a word, the listener repeats it and adds "who?", and the punchline turns that word into part of a new sentence. "Lettuce." "Lettuce who?" "Lettuce in, it's cold out here!" The joke is a tiny play for two actors, and the listener is part of the act.
That fixed script is the secret to the format's popularity. Kids learn it quickly, and once they know the pattern, they can enjoy any knock-knock joke, even before they understand puns. Adults like it for the opposite reason: the more absurd or stretched the pun, the funnier the moment when it finally clicks.
Knock-knock jokes for preschool and kindergarten
For children ages three to six, choose jokes where the punchline sounds like a word they already know: "Cash who?" becomes "cashew," "Honeydew" becomes "honey, do you," and "Alpaca" becomes "I'll pack a." Our section for little kids is built from exactly these. Say the joke slowly, emphasize the sound-alike word, and let the child do the "who's there?" part. When they start telling the jokes back to you, it is a great sign that they are learning how language plays with sound.
Knock-knock jokes are also a sneaky reading tool. Write one on a sticky note in a lunchbox, or take turns reading the lines out loud. The back-and-forth structure helps young readers practice turn-taking and expression without it feeling like homework. For more age-appropriate humor, see our full page of jokes for kids.
Tips for telling knock-knock jokes
- Find a partner. The format only works if someone answers. If your listener does not know the script, coach them through the first one.
- Use a real knock. Knocking on a table or a door adds a little theater and grabs attention.
- Pause before the punchline. Let the "who?" hang in the air for a second.
- Try the interactive ones. Jokes like the interrupting cow or the control freak only work when the listener plays along, which makes them the biggest hits at parties.
- Go multi-round. The banana and orange joke builds tension by repeating itself. It is longer, but the payoff is worth it.
The best knock-knock jokes for adults
Grown-ups usually prefer knock-knock jokes with clever or slightly ridiculous puns, such as the mustache joke or "Euripides." These work well in a group chat or as a quick icebreaker, because everyone already knows the format and nobody has to explain anything. If you enjoy wordplay, you will also like our dad jokes and one-liners, and our funny jokes hub collects the best of every category. Around the holidays, look for seasonal knock-knock jokes on our Christmas jokes page.
More jokes
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FAQ
What is the funniest knock-knock joke?
The interrupting cow is a strong favorite, because the listener gets interrupted mid-sentence by a loud "MOO!" The banana and orange joke is a close second for its long, silly buildup.
What are good knock-knock jokes for kindergarteners?
Choose jokes where the punchline is a familiar word in disguise, such as "Cash who? No thanks, I'll have peanuts" or "Honeydew you want to come out and play?" Our little kids section has fifteen of them.
How do you tell a knock-knock joke?
Say "Knock, knock." Your partner says "Who's there?" You give a word, they repeat it with "who?", and you deliver the punchline that turns the word into a pun.
Are there knock-knock jokes for adults?
Yes. Adults usually enjoy the more stretched puns, like "Mustache who? I mustache you a question, but I'll shave it for later." See our groan-worthy section.
Who invented knock-knock jokes?
Nobody knows for sure. The format became a nationwide craze in the United States in the 1930s, when newspapers and radio shows ran knock-knock contests, and it has been a playground favorite ever since.
Can I use these knock-knock jokes in class?
Absolutely. Every joke on this page is clean, and the call-and-response format makes them great for reading practice, morning meetings and classroom icebreakers.