40 Knock-Knock Jokes for Kids
Forty funny, clean knock-knock jokes for kids, from classic favourites to new groaners, plus tips for teaching little ones how knock-knock jokes work.
50 Clean Jokes for Kids (That Adults Will Laugh At Too)
Fifty clean jokes for kids, sorted by theme: animals, food, school, science and knock-knock jokes, plus tips for telling jokes that land.
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A good kids’ joke is simple, silly and surprising, and it works even better when a grown-up groans. These fifty clean jokes are sorted by theme so you can pick the right ones for the dinner table, the classroom or a long car ride.
Animal jokes
- Why don’t elephants use computers? They’re afraid of the mouse.
- What do you call a sleeping bull? A bulldozer.
- Why do cows wear bells? Because their horns don’t work.
- What do you call a bear with no teeth? A gummy bear.
- Why did the cat sit on the computer? To keep an eye on the mouse.
- What do you call a fish with no eyes? A fsh.
- How do bees brush their hair? With a honeycomb.
- What do you call a dinosaur that’s sleeping? A dino-snore.
- Why are fish so smart? Because they live in schools.
- What’s a cat’s favourite colour? Purr-ple.
Food jokes
- Why did the banana go to the doctor? It wasn’t peeling well.
- What do you call cheese that isn’t yours? Nacho cheese.
- Why did the cookie go to the nurse? It felt crummy.
- What did the lettuce say to the celery? Quit stalking me.
- Why did the tomato blush? Because it saw the salad dressing.
- What kind of key opens a banana? A mon-key.
- Why don’t eggs tell jokes? They’d crack each other up.
- What do you call a sad strawberry? A blueberry.
- Why did the orange stop halfway up the hill? It ran out of juice.
- What’s a pretzel’s favourite dance? The twist.
School jokes
- Why was the maths book sad? It had too many problems.
- What’s a teacher’s favourite nation? Expla-nation.
- Why did the student eat his homework? The teacher said it was a piece of cake.
- How do you get straight A’s? Use a ruler.
- Why did the music teacher need a ladder? To reach the high notes.
- What do you call a boomerang that doesn’t come back? A stick.
- Why did the pencil get lost? It didn’t have a point.
- What did the paper say to the pencil? Write on!
- Why was the broom late for school? It over-swept.
- What’s the king of all school supplies? The ruler.
Science and space jokes
- Why did the sun go to school? To get brighter.
- How do you throw a party in space? You planet.
- What did one volcano say to the other? I lava you.
- Why can’t you trust an atom? They make up everything.
- What kind of music do planets like? Nep-tunes.
- Why did the scarecrow win an award? He was outstanding in his field.
- What do clouds wear under their shorts? Thunderwear.
- How does the moon cut his hair? Eclipse it.
- What did the ground say to the earthquake? You crack me up.
- Why did the computer go to the doctor? It had a virus.
Knock-knock jokes
There are plenty more in our 40 knock-knock jokes for kids.
- Knock, knock. Who’s there? Lettuce. Lettuce who? Lettuce in, it’s cold out here!
- Knock, knock. Who’s there? Boo. Boo who? Don’t cry, it’s only a joke!
- Knock, knock. Who’s there? Interrupting cow. Interrupting c— MOO!
- Knock, knock. Who’s there? Olive. Olive who? Olive you!
- Knock, knock. Who’s there? Tank. Tank who? You’re welcome!
- Knock, knock. Who’s there? Figs. Figs who? Figs the doorbell, it’s broken!
- Knock, knock. Who’s there? Water. Water who? Water you doing? Let me in!
- Knock, knock. Who’s there? Atch. Atch who? Bless you!
- Knock, knock. Who’s there? Cow says. Cow says who? No, silly, a cow says moo!
- Knock, knock. Who’s there? Owls say. Owls say who? Yes, they do!
How to tell a joke that lands
- Know the punchline cold. Nothing kills a joke like “Wait, how does it end?”
- Pause before the punchline. A one-second beat builds anticipation.
- Keep a straight face. It’s funnier if you don’t laugh first.
- Let kids tell them back. Children love being the joke-teller. Their timing will be terrible, and that’s half the fun.
For a sleepover, mix a few jokes with some not-too-scary stories; Terrible Stories has a set of spooky tales written especially for kids. Or keep the giggles going with our riddles with answers.
Frequently asked questions
What age are these jokes for?
Most work for children aged five and up, with knock-knock jokes especially popular with younger kids. Adults usually enjoy the groans.
Why do kids love puns?
Puns play with double meanings, and spotting them is a satisfying “I get it!” moment as children’s language skills grow.
Every article is edited by a human and checked against our editorial policy. Spotted a mistake? Tell us.
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