200+ Knock Knock Poo Jokes: Funny Bathroom Jokes

Knock knock poo jokes bring together two things that have powered playground humor for generations: knock-knock jokes and silly bathroom comedy. They’re quick, easy to remember, and perfect for kids who think anything involving the bathroom deserves a laugh.

Why does this type of humor work so well? The setup is familiar, the punchlines are simple, and the subject matter is wonderfully silly. From toilet jokes and poop puns to bathroom one-liners, there’s plenty here for a quick laugh.

Whether you’re looking for clean kids’ jokes, funny family humor, or short lines for sharing, this collection keeps the jokes light and playful. So, who’s at the door? Let’s find out!

Classic Knock Knock Poo Jokes

Classic knock-knock jokes get a bathroom makeover in this collection. These short jokes use familiar setups and silly punchlines that are easy to repeat at home, at school, or with friends.

1.
Knock, knock.
Who’s there?
Poo.
Poo is knocking because it couldn’t wait!

2.
Knock, knock.
Who’s there?
Toilet.
Toilet you I’m ready for a bathroom break!

3.
Knock, knock.
Who’s there?
Poop.
Poop goes the bathroom door!

4.
Knock, knock.
Who’s there?
Flush.
Flush who? Hurry up, I have a joke to finish!

5.
Knock, knock.
Who’s there?
Pee.
Pee sure this joke is going somewhere!

6.
Knock, knock.
Who’s there?
Stink.
Stink outside? I thought that was you!

7.
Knock, knock.
Who’s there?
Brown.
Brown is the color of today’s punchline!

8.
Knock, knock.
Who’s there?
Potty.
Potty time has officially arrived!

9.
Knock, knock.
Who’s there?
Toot.
Toot toot! Here comes another bathroom joke!

10.
Knock, knock.
Who’s there?
Plop.
Plop yourself down and listen!

11.
Knock, knock.
Who’s there?
Doo.
Doo you want another joke?

12.
Knock, knock.
Who’s there?
Stool.
Stool waiting for the punchline!

13.
Knock, knock.
Who’s there?
Wipe.
Wipe that grin off your face!

14.
Knock, knock.
Who’s there?
Bum.
Bum who?
Bum’s the word!

15.
Knock, knock.
Who’s there?
Sewer.
Sewer who?
Seweriously, that was funny!

16.
Knock, knock.
Who’s there?
Drain.
Drain yourself to the bathroom!

17.
Knock, knock.
Who’s there?
Poot.
Poot me down for another joke!

18.
Knock, knock.
Who’s there?
Bathroom.
Bathroom jokes are always welcome here!

Pro Tip: These short jokes work well for family joke time. Let kids take turns delivering the “Who’s there?” lines for extra participation.

Funny Poop Jokes for Kids

Kids often love simple humor with silly words, funny sounds, and surprising punchlines. These poop jokes keep the language playful and easy to understand.

1. My poop told a joke. It was a little crappy.
2. Poop is great at keeping secrets—it always stays bottled up.
3. My toilet has one job, and it takes it seriously.
4. I told my poop to stay positive. It said, “I’m working on it.”
5. Poop jokes are never hard to find.
6. My bathroom humor has excellent timing.
7. I asked my poop for directions. It said, “Follow your nose.”
8. The toilet went to school to improve its bowl knowledge.
9. My poop loves comedy because it always lands.
10. The toilet got promoted because it handled every situation.
11. Poop walked into the bathroom and said, “I’m here for business.”
12. My toilet doesn’t tell secrets. It keeps everything under the lid.
13. Poop jokes have a way of sticking around.
14. My bathroom has a very solid sense of humor.
15. Poop joined the school band but kept dropping the bass.
16. The toilet loves jokes because it can handle the pressure.
17. My poop wanted a vacation, so it went down the drain.
18. The toilet’s favorite exercise is the bowl squat.
19. Poop doesn’t need a calendar. It knows when it’s time to go.
20. My bathroom joke was number two on the list.
21. Poop told the toilet, “You complete me.”
22. The toilet and poop make a pretty solid team.

Pro Tip: Use these as silly lunchbox notes or quick family jokes, especially when kids want something short enough to memorize.

Toilet Knock Knock Jokes

The toilet is one of the easiest characters to use in bathroom humor. Give it a voice, a personality, and a punchline, and you’ve got a simple joke ready to share.

1. Knock, knock.
   Who’s there?
   Toilet.
   Toilet who?
   Toilet you a funny story!
2. Knock, knock.
   Who’s there?
   Bowl.
   Bowl who?
   Bowl you believe another joke is coming?
3. Knock, knock.
   Who’s there?
   Seat.
   Seat who?
   Seat down and laugh!
4. Knock, knock.
   Who’s there?
   Flush.
   Flush who?
   Flush the joke after you’re done laughing!
5. Knock, knock.
   Who’s there?
   Lid.
   Lid who?
   Lid’s keep this joke between us!
6. Knock, knock.
   Who’s there?
   Tank.
   Tank who?
   Tank you for opening the bathroom door!
7. Knock, knock.
   Who’s there?
   Bowl.
   Bowl who?
   Bowl you ready for another one?
8. Knock, knock.
   Who’s there?
   Pipe.
   Pipe who?
   Pipe down and listen!
9. Knock, knock.
   Who’s there?
   Water.
   Water who?
   Water you waiting for? Sit down!
10. Knock, knock.
    Who’s there?
    Plumber.
    Plumber who?
    Plumber me another joke!
11. Knock, knock.
    Who’s there?
    Drain.
    Drain who?
    Drain yourself over here!
12. Knock, knock.
    Who’s there?
    Cistern.
    Cistern who?
    Cisternly need a better joke!
13. Knock, knock.
    Who’s there?
    Bathroom.
    Bathroom who?
    Bathroom door is open!
14. Knock, knock.
    Who’s there?
    Porcelain.
    Porcelain who?
    Porcelain the laughter!
15. Knock, knock.
    Who’s there?
    Toilet paper.
    Toilet paper who?
    Toilet paper you another joke!
16. Knock, knock.
    Who’s there?
    Plop.
    Plop who?
    Plop down and laugh!
17. Knock, knock.
    Who’s there?
    Handle.
    Handle who?
    Handle this hilarious toilet joke!
18. Knock, knock.
    Who’s there?
    Water tank.
    Water tank who?
    Water tank you for listening!

Pro Tip: Let children invent their own toilet characters. A funny voice and silly name can turn one joke into a whole bathroom comedy routine.

Poop Puns and Wordplay

Puns make bathroom humor even easier to share. These quick wordplays use toilet terms, bathroom vocabulary, and silly twists for fast laughs.

1. I’m having a very solid day.
2. That joke was number two on my list.
3. Let’s not flush this opportunity.
4. I’m taking this joke one step at a time.
5. That punchline really stinks.
6. This joke has serious toilet-tude.
7. I have a stool of knowledge.
8. That’s a pretty crappy excuse.
9. Let’s get down to bathroom business.
10. This joke really dropped something funny.
11. I’m on a roll—of toilet paper.
12. Keep calm and carry the loo.
13. That’s what I call a bowel of laughs.
14. I need to pipe up with another joke.
15. Let’s wipe the slate clean.
16. That’s a load of laughs.
17. This humor is hard to flush away.
18. I’m having a seat-down comedy session.
19. That’s a clean joke with a dirty subject.
20. My humor is toilet trained.
21. I have a flush of inspiration.
22. Let’s wrap things up before the toilet paper runs out.

Pro Tip: Puns work especially well on greeting cards, bathroom signs, joke boards, and funny social media graphics.

Bathroom Knock Knock Jokes

Bathrooms provide plenty of silly material. From toilet paper to soap and sinks, almost everything in the room can become part of a quick joke.

1. Knock, knock.
   Who’s there?
   Soap.
   Soap who?
   Soap-er glad you’re here!
2. Knock, knock.
   Who’s there?
   Sink.
   Sink who?
   Sink about that one!
3. Knock, knock.
   Who’s there?
   Mirror.
   Mirror who?
   Mirror, mirror, who’s funny?
4. Knock, knock.
   Who’s there?
   Towel.
   Towel who?
   Towel you another joke!
5. Knock, knock.
   Who’s there?
   Shower.
   Shower who?
   Shower you glad it’s joke time?
6. Knock, knock.
   Who’s there?
   Soap.
   Soap who?
   Soap it up and laugh!
7. Knock, knock.
   Who’s there?
   Brush.
   Brush who?
   Brush yourself off and hear this one!
8. Knock, knock.
   Who’s there?
   Toothpaste.
   Toothpaste who?
   Toothpaste your laughing face!
9. Knock, knock.
   Who’s there?
   Towel.
   Towel who?
   Towel you what happened next!
10. Knock, knock.
    Who’s there?
    Shampoo.
    Shampoo who?
    Shampoo-posed this joke would make you laugh!
11. Knock, knock.
    Who’s there?
    Sink.
    Sink who?
    Sink your teeth into this punchline!
12. Knock, knock.
    Who’s there?
    Bath.
    Bath who?
    Bath time has arrived!
13. Knock, knock.
    Who’s there?
    Mirror.
    Mirror who?
    Mirror-ly another joke!
14. Knock, knock.
    Who’s there?
    Tissue.
    Tissue who?
    Tissue funny!
15. Knock, knock.
    Who’s there?
    Brush.
    Brush who?
    Brush over and listen!
16. Knock, knock.
    Who’s there?
    Shower.
    Shower who?
    Shower is ready for another joke!
17. Knock, knock.
    Who’s there?
    Mat.
    Mat who?
    Mat’s where the jokes happen!
18. Knock, knock.
    Who’s there?
    Comb.
    Comb who?
    Comb over and hear this!

Pro Tip: These are ideal for a bathroom-themed joke contest where everyone has to create a punchline using an everyday bathroom object.

Silly Toilet Jokes

Sometimes the simplest joke gets the biggest laugh. These silly toilet jokes use harmless wordplay and playful bathroom situations.

1. Why did the toilet go to school? It wanted to improve its seat work.
2. Why did the toilet paper roll away? It wanted a little space.
3. Why did the toilet blush? Someone saw it with its lid up.
4. Why did the toilet tell jokes? It liked handling pressure.
5. Why did the toilet get promoted? It always flushed out problems.
6. Why did the toilet paper cross the bathroom? To get to the other roll.
7. Why did the toilet sit quietly? It was thinking about its next flush.
8. Why did the toilet take a break? It needed to recharge its tank.
9. Why did the toilet bring a notebook? It had a lot of bowl points.
10. Why did the toilet join the comedy club? It had great delivery.
11. Why did the toilet get a trophy? It was outstanding in its bowl.
12. Why did the toilet tell a secret? It needed to get something off its seat.
13. Why did the toilet paper get promoted? It always rolled with the team.
14. Why did the toilet go outside? It needed fresh air.
15. Why did the toilet become a comedian? It had perfect timing.
16. Why did the toilet sit near the door? It wanted an easy exit.
17. Why did the toilet get applause? It delivered a solid performance.
18. Why did the toilet love Friday? It knew the weekend was coming.

Pro Tip: Turn these into a family “why did the toilet…” joke challenge and let everyone create one new punchline.

Potty Training Jokes

Potty training can create plenty of memorable moments. These jokes keep that stage lighthearted with simple wordplay that parents and kids can enjoy together.

1. Potty training has one rule: know where the toilet is.
2. My potty got a graduation certificate.
3. Potty training: tiny steps, big bathroom victories.
4. The potty said, “You’ve got this!”
5. My toilet is now officially part of the family.
6. Potty training requires patience and plenty of bathroom trips.
7. The potty became a coach: “Keep going!”
8. My bathroom schedule is becoming very professional.
9. Potty training is a seat of learning.
10. The toilet gives excellent feedback.
11. My potty has become a very important appointment.
12. Potty training: one flush at a time.
13. The bathroom is now the most visited room.
14. Potty training comes with its own learning curve.
15. My little student is majoring in bathroom skills.
16. The potty says, “Practice makes perfect.”
17. Potty training is a small adventure with a big finish.
18. The toilet is ready for its next lesson.
19. My potty calendar is fully booked.
20. Bathroom training has officially begun.
21. The potty is taking its teaching duties seriously.
22. Every successful bathroom trip deserves applause.

Pro Tip: Keep potty-training humor positive and encouraging. A silly joke can help make a routine bathroom visit more relaxed.

Funny Poop One-Liners

Need something fast? These short poop one-liners are perfect for texts, joke collections, captions, or a quick laugh between friends.

1. That’s a load of laughter.
2. I came, I saw, I flushed.
3. Number two, but number one in comedy.
4. Keep calm and flush on.
5. Life is better with bathroom humor.
6. That’s a pretty solid punchline.
7. I have a stool to tell you.
8. Let’s get down to business—bathroom business.
9. This joke has been thoroughly flushed out.
10. Don’t underestimate the power of a good toilet joke.
11. My humor just took a bathroom break.
12. That’s one way to drop a punchline.
13. I like my jokes short and well flushed.
14. Bathroom humor never needs a complicated setup.
15. That joke stinks—in the best possible way.
16. My punchline just went down the drain.
17. I’m keeping things strictly toilet-related.
18. That’s a royal flush of comedy.
19. My joke has excellent bowl control.
20. I put the “pun” in plumbing.
21. This comedy is fully toilet trained.
22. Consider that joke officially flushed.

Pro Tip: Short one-liners work well as captions because readers can understand them instantly without needing a long setup.

Funny Toilet Paper Jokes

Toilet paper has earned its place in bathroom comedy. Rolls, sheets, and the occasional empty holder all provide easy setups for silly jokes.

1. Toilet paper is always on a roll.
2. My toilet paper has a great sense of humor—it always comes in layers.
3. Toilet paper never gets lost; it just follows the roll.
4. The toilet paper went to therapy because it felt torn.
5. My toilet paper is a real tissue of trust.
6. Toilet paper’s favorite dance is the roll.
7. The roll said, “I’ve got you covered.”
8. Toilet paper is excellent at handling messy situations.
9. The bathroom ran out of toilet paper. That’s a serious paper shortage.
10. Toilet paper never asks too many questions. It just gets the job done.
11. The roll was feeling empty, so it needed support.
12. Toilet paper has a clean reputation.
13. The toilet paper joined the circus because it loved rolling.
14. One sheet at a time—that’s the toilet paper philosophy.
15. Toilet paper never wants to be left hanging.
16. The roll is always ready for a comeback.
17. Toilet paper has plenty of layers to its personality.
18. The bathroom’s best friend comes in a roll.
19. Toilet paper always knows when to stick around.
20. My roll has reached the end of its story.
21. Toilet paper believes every problem can be wrapped up.
22. That’s a tear-ible toilet paper joke.

Pro Tip: Toilet paper jokes make fun printable signs for guest bathrooms, especially when the punchlines stay short and family-friendly.

Poo Puns for Friends

Bathroom humor becomes even more entertaining when shared with friends who already appreciate silly wordplay.

1. You’re my number-one friend, even when the joke is number two.
2. Our friendship is solid.
3. We always stick together—even through crappy jokes.
4. Friends don’t let friends tell bad toilet jokes alone.
5. You’re the perfect partner in grime.
6. Our friendship can handle the pressure.
7. We have a flush-tastic friendship.
8. You make every crappy day better.
9. Friends like you are hard to flush away.
10. We’re two peas in a potty.
11. Our friendship has excellent plumbing.
12. You always know how to clean up a bad joke.
13. We’re connected by a solid sense of humor.
14. Thanks for putting up with my toilet jokes.
15. You’re the lid to my toilet.
16. We go together like toilet and paper.
17. Our jokes may stink, but our friendship doesn’t.
18. You’re always there when I need a bathroom break laugh.
19. Friendship status: fully toilet trained.
20. Thanks for rolling with my terrible puns.
21. Our friendship deserves a royal flush.
22. You’re my favorite person to share crappy jokes with.

Pro Tip: Send one of these to a close friend when you need a deliberately silly message that doesn’t take itself seriously.

Clean Knock Knock Poo Jokes for Kids

Looking for bathroom humor without complicated language? These clean knock-knock jokes keep the subject silly and suitable for family joke time.

1. Knock, knock.
   Who’s there?
   Poo.
   Poo who?
   Poo-r me another joke!
2. Knock, knock.
   Who’s there?
   Potty.
   Potty who?
   Potty time is joke time!
3. Knock, knock.
   Who’s there?
   Loo.
   Loo who?
   Loo-k who’s back with another joke!
4. Knock, knock.
   Who’s there?
   Toilet.
   Toilet who?
   Toilet you a funny one!
5. Knock, knock.
   Who’s there?
   Flush.
   Flush who?
   Flush your worries away!
6. Knock, knock.
   Who’s there?
   Poop.
   Poop who?
   Poop quiz! What comes after one?
7. Knock, knock.
   Who’s there?
   Bowl.
   Bowl who?
   Bowl you like this joke?
8. Knock, knock.
   Who’s there?
   Seat.
   Seat who?
   Seat yourself for another laugh!
9. Knock, knock.
   Who’s there?
   Tissue.
   Tissue who?
   Tissue funny!
10. Knock, knock.
    Who’s there?
    Soap.
    Soap who?
    Soap-er joke coming!
11. Knock, knock.
    Who’s there?
    Towel.
    Towel who?
    Towel you another one!
12. Knock, knock.
    Who’s there?
    Pipe.
    Pipe who?
    Pipe down and laugh!
13. Knock, knock.
    Who’s there?
    Drain.
    Drain who?
    Drain yourself into the bathroom!
14. Knock, knock.
    Who’s there?
    Plop.
    Plop who?
    Plop down and listen!
15. Knock, knock.
    Who’s there?
    Poot.
    Poot who?
    Poot your hands together for this joke!
16. Knock, knock.
    Who’s there?
    Brown.
    Brown who?
    Brown is back with another silly joke!
17. Knock, knock.
    Who’s there?
    Stool.
    Stool who?
    Stool you laughing yet?
18. Knock, knock.
    Who’s there?
    Paper.
    Paper who?
    Paper chance to hear another joke!

Pro Tip: These are great for family game nights, classroom-friendly joke collections, or a child who wants to perform a silly joke for everyone.

The Ultimate Knock Knock Poo Joke Mix

Ready for one final round? This mixed collection combines poop puns, toilet jokes, potty humor, and knock-knock setups for a final batch of quick laughs.

1. Knock, knock.
   Who’s there?
   Poo.
   Poo who?
   Poo-lease tell me you laughed!
2. My toilet has a great sense of humor. It always handles the pressure.
3. Knock, knock.
   Who’s there?
   Doo.
   Doo who?
   Doo you have another joke?
4. I told my toilet a secret. It kept it under the lid.
5. Knock, knock.
   Who’s there?
   Stink.
   Stink who?
   Stink we need another joke?
6. My poop wanted a career in comedy. It already had good delivery.
7. Knock, knock.
   Who’s there?
   Plop.
   Plop who?
   Plop down and enjoy the punchline!
8. Toilet paper is always ready to roll.
9. Knock, knock.
   Who’s there?
   Bowl.
   Bowl who?
   Bowl you join the joke club?
10. My bathroom has a strict policy: no bad flush decisions.
11. Knock, knock.
    Who’s there?
    Poot.
    Poot who?
    Poot your hands together!
12. Poop jokes are always looking for a good opening.
13. Knock, knock.
    Who’s there?
    Loo.
    Loo who?
    Loo-k at this funny punchline!
14. My toilet loves comedy because it knows how to handle pressure.
15. Knock, knock.
    Who’s there?
    Wipe.
    Wipe who?
    Wipe that smile off your face!
16. My bathroom mirror says I look flush-tastic.
17. Knock, knock.
    Who’s there?
    Toilet paper.
    Toilet paper who?
    Toilet paper you another joke!
18. My poop joke was terrible, but at least it had a solid ending.

Pro Tip: Save this final section for a family joke battle. Give each person three jokes and let everyone vote for the funniest punchline.

Conclusion

Knock knock poo jokes prove that bathroom humor can be short, silly, and easy to share. Whether you’re looking for a quick laugh, a kid-friendly joke, a funny toilet pun, or something ridiculous for the family group chat, these jokes provide plenty of options.

From poop puns and toilet paper jokes to potty-training humor and classic knock-knock setups, the best jokes are often the simplest ones. So pick a favorite, tell it with confidence, and see who laughs first.

Did you have a favorite? Share your funniest knock knock poo jokes in the comments, send this collection to a friend, or challenge someone to create an even sillier bathroom punchline!

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Frequently Asked Questions (FAQs)

What are knock knock poo jokes?

Knock knock poo jokes are silly jokes that combine the traditional “Knock, knock” format with playful bathroom humor involving poop, toilets, potty training, and related topics.

Are knock knock poo jokes suitable for kids?

Many can be. Clean versions use simple language and silly bathroom themes without adult content, making them suitable for family joke time and children who enjoy potty humor.

What is a funny poop knock-knock joke?

A simple example is:

“Knock, knock.”
“Who’s there?”
“Poo.”
“Poo who?”
“Poo-lease tell me you laughed!”

Why do kids like poop jokes?

Kids often enjoy humor involving silly words, surprising sounds, and everyday experiences. Bathroom topics can be especially amusing because they are familiar and easy to understand.

What are some funny toilet jokes?

Popular toilet jokes use words such as “flush,” “bowl,” “seat,” “tank,” and “toilet paper” to create playful puns and short punchlines.

Can I use these jokes at school?

Clean bathroom jokes can work for informal classroom joke activities when they fit the teacher’s rules and the age group. Keep the language simple and respectful.

How can I make my own knock-knock poo joke?

Start with a bathroom-related word such as “poo,” “potty,” “flush,” or “toilet.” Then create a short response to the “Who’s there?” question and finish with a surprising pun.

What makes a good knock-knock joke?

A good knock-knock joke has a short setup, an easy-to-follow pattern, and a punchline that arrives quickly. Wordplay and unexpected answers can make it even more memorable.