28+ Best Responses to “Knock Knock” (100+ Examples)

Someone just texted you “Knock knock,” and now the whole chat is waiting for your next move. The classic answer is “Who is there?” but you do not have to play it straight every time. A clever twist, a funny comeback, or a silly joke of your own can turn a simple knock knock joke into the funniest part of the day.

Knock knock jokes are one of the oldest joke formats in the world, and they work because everyone knows the rules: one person knocks, the other asks who is there, a name or word follows, and then comes the punchline. The three best replies to keep ready are the classic “Who is there?”, the playful “Come in, the door is open, and so is my sense of humor,” and the funny “Is it my pizza? I have been waiting forever.” Each one keeps the joke alive in its own way.

This guide has 28 replies for every mood: classic play along answers for purists, funny comebacks for friends, clever twists for joke lovers, family friendly lines for kids, and short replies for fast chats. Use them in texts, group chats, or face to face, and never get stuck at the door again.

📌 Jump to

• Classic Play Along Replies
• Funny Comebacks
• Clever Twists
• Replies for Kids and Family
• Short and Text Ready Replies

How a Knock Knock Joke Works

A knock knock joke follows a simple four step pattern that almost everyone knows by heart. First, one person says “Knock knock.” Second, the other person answers “Who is there?” Third, the first person names someone or something, like “Boo” or “Lettuce.” Fourth, the other person asks “Boo who?” or “Lettuce who?” and the first person delivers the punchline, like “Do not cry, it is only a joke” or “Lettuce in, it is cold out here.”

The fun comes from the surprise in the last line, and that is also why a good reply matters. If you answer with a twist, you steal a little of the spotlight and make the joke a team effort instead of a one person show. Friends love it when you play along, and they love it even more when you catch them off guard with a comeback they did not see coming.

Here is how a classic exchange looks in a chat, and how a twist changes the whole mood:

Friend: “Knock knock.”

You: “Who is there?”

Friend: “Boo.”

You: “Boo who? Do not cry, it was only a joke, right?”

Friend: “Ha, you already knew that one!”

Classic Play Along Replies

The traditional answers that keep the joke going exactly as expected.

1. “Who is there?”

2. “Come in, the door is open.”

3. “Who is knocking at this hour?”

4. “I am listening, who is there?”

5. “Knock knock? Alright, who is there?”

6. “Come on in, I have been waiting for the punchline.”

Classic replies work because they respect the game. The other person has a punchline ready, and “Who is there?” is the key that unlocks it. Use these when a kid is telling the joke, when you want to be polite, or when you genuinely want to hear how the joke ends.

Funny Comebacks

Silly replies that turn the joke back on the joker.

7. “Is it my pizza? I have been waiting forever.”

8. “Sorry, we only accept text messages now.”

9. “Come back later, I am right in the middle of a nap.”

10. “Hold on, let me grab my laugh track first.”

11. “I hope you are selling cookies, because I am hungry.”

12. “Oops, my door is stuck. Can you knock louder?”

Funny comebacks work because they break the pattern everyone expects. Instead of asking “Who is there?” you answer with something random, and the surprise gets the first laugh before the joke even starts. These are best with friends who enjoy quick humor and will not mind a little friendly chaos.

Clever Twists

Smart replies that flip the joke and steal the punchline.

13. “Who is there? My interest leaving, if this joke is bad.”

14. “Knock knock? Let me consult my dinosaur first.”

15. “Opportunity? Sorry, it does not knock twice.”

16. “Did we order a joke, or is this a surprise delivery?”

17. “Wait, let me get my script. I forgot my lines.”

18. “Last time I opened the door, I ended up in Narnia.”

Clever twists work because they show you know the format well enough to play with it. Lines like the opportunity joke or the Narnia line reward people who love wordplay, and they often get a bigger laugh than the original joke. Save these for friends who appreciate a smart sense of humor.

Replies for Kids and Family

Sweet and safe replies that keep the joke fun for little ones.

19. “Who is there? I love knock knock jokes, tell me more.”

20. “Come in, I have cookies and a big smile waiting.”

21. “Knock knock? That must be the silliest visitor ever.”

22. “Who is there? Is it a banana? I bet it is a banana.”

23. “I am ready, who is there? Make it a good one.”

24. “Come in, little comedian, the stage is all yours.”

Family replies work because kids tell knock knock jokes to feel clever and grown up, and your enthusiasm is the real reward. Play along with energy, laugh at the punchline even if you have heard it before, and let them enjoy their moment in the spotlight.

Short and Text Ready Replies

Quick replies for fast chats and group messages.

25. “Who is there?”

26. “Ha, go on, I am listening.”

27. “Okay, you have my attention.”

28. “Knock knock? This better be good.”

29. “Come in, quick, before I change my mind.”

30. “LOL, who is there?”

Short replies are perfect for texting because knock knock jokes move fast in a chat. One quick line keeps the rhythm going without slowing anyone down, and it tells the joker you are in on the fun. In a group chat, a short reply also leaves room for everyone else to jump in.

How to Pick the Right Reply

Match your reply to the person and the place. With kids, play along with excitement and let them shine. With friends, a funny comeback or a clever twist gets the biggest laugh. In a group chat, a short reply keeps the joke moving for everyone. And if the joke is part of a flirty chat, a playful line like “Come in, I have been waiting for you” keeps the spark going.

If you love collecting clever comebacks, you can find even more ideas in this roundup of funny replies when someone tells you a knock knock joke. For other playful texts, the free Reply Finder tool at Topicshaven has ready replies for almost any message. You can also steal a light tone from our guides on responses to wyd, best responses to lol, responses to how was your day, and responses to thinking of you.

• With kids: play along, sound excited, and laugh at the punchline.
• With friends: use a funny comeback or a clever twist for a bigger laugh.
• In a group chat: keep it short so everyone can join the joke.
• With your crush: add a playful or flirty line and let them know you enjoy it.

Real Chat Examples You Can Copy

Here are three short chats that show how the right reply changes the whole joke. Copy the style that fits your conversation best.

The classic joke, played straight: Your friend has a joke ready, and you give them the setup they need.

Friend: “Knock knock.”

You: “Who is there?”

Friend: “Lettuce.”

You: “Lettuce who?”

Friend: “Lettuce in, it is freezing out here!”

The comeback that steals the show: Your friend starts a joke, and you answer with a twist instead.

Friend: “Knock knock.”

You: “Is it my pizza? I have been waiting forever.”

Friend: “Ha, no pizza, just a joke. Who is there?”

You: “Fine, I am listening, make it good.”

The kid comedian: Your little cousin is proud of a joke, and your excitement makes their day.

Cousin: “Knock knock!”

You: “Who is there? I love knock knock jokes, tell me more!”

Cousin: “Boo.”

You: “Boo who?”

Cousin: “Do not cry, it is only a joke!”

What Not to Say

A knock knock joke is an invitation to play, so the worst replies are the ones that shut the game down. Here is what to avoid.

Even if you have heard the same joke ten times, a little patience goes a long way. The person telling it wants a laugh and a shared moment, not a review of their comedy skills. Play along, enjoy the silliness, and save the honest feedback for later.

Tips for the Perfect Reply

• Play along first: Always give the joker their setup before you twist it. Answering “Who is there?” at least once shows respect for the game, and your twist lands harder after that.
• Keep it clean and kind: Knock knock jokes are for everyone, including kids and grandparents. Avoid rude or edgy twists, and keep the humor something the whole room can enjoy.
• Time your twist: A comeback works best when it is unexpected. If you twist every single joke, the surprise wears off, so save your best lines for the right moment.
• Laugh at the punchline: Even a joke you have heard before deserves a smile. Your laugh is the reward for the person who told it, and it encourages them to keep sharing fun moments with you.
• Have one joke ready yourself: The best answer to a knock knock joke is often another knock knock joke. Keep one or two classics in your pocket, and the laughter can go back and forth all evening.
• Read the room: In a work chat or a serious moment, a short classic reply fits better than a wild twist. Save the big comebacks for friends, family, and relaxed group chats.

Frequently Asked Questions

What is the classic reply to “Knock knock”?

Say “Who is there?” It is the traditional answer that sets up the rest of the joke, and everyone expects it.

What is a funny reply to a knock knock joke?

Try “Is it my pizza? I have been waiting forever.” It breaks the pattern with a surprise, and it works in almost any friendly chat.

How do I reply to a knock knock joke from a kid?

Play along with excitement, say “Who is there? I love knock knock jokes,” and laugh at the punchline. Your enthusiasm matters more than the joke.

Final Thoughts

A knock knock joke is a small invitation to laugh together, and your reply decides whether the door opens or stays shut. Play along, twist it when the moment is right, and enjoy the silliness. And for every text you cannot quite find the words for, the free Reply Finder tool at Topicshaven is right there for you.