Knock, knock. Who's there? Isabelle. Isabelle who? Isabelle necessary on a bicycle!

Knock, knock. Who's there? Cow says. Cow says who? Cow says moooo-ve over, I have a joke for you!

Knock, knock. Who's there? Atch. Atch who? Atch the doorbell, I'm here with more jokes!

Knock, knock. Who's there? Olive. Olive who? Olive your jokes are amazing, can you tell more?

Knock, knock. Who's there? Harry. Harry who? Harry up and laugh at this knock-knock joke!

Knock, knock. Who's there? Olive. Olive who? Olive a sudden, it's time for another joke!

Knock, knock. Who's there? Police. Police who? Police be a little more patient, I'm trying to think of a joke!

Knock, knock. Who's there? Cook. Cook who? Cook like I have a joke for you!

Knock, knock. Who's there? Booze. Booze who? Booze the door and let me in!

Knock, knock. Who's there? Nun. Nun who? Nun of your beeswax, that's who!

Knock, knock. Who's there? Hippo. Hippo who? Hippo the magic word, and let me in!

Knock, knock. Who's there? Harry. Harry who? Harry up and open the door, I have more jokes to tell!

Knock, knock. Who's there? Canoe. Canoe who? Canoe help me come up with more knock-knock jokes?

Knock, knock. Who's there? Ben. Ben who? Ben waiting to tell you this joke!

Knock, knock. Who's there? Iva. Iva who? I've a lot more knock-knock jokes where that came from!

Knock, knock. Who's there? Dustin. Dustin who? Dust in time for you to hear another joke!

Knock, knock. Who's there? Wanda. Wanda who? Wanda hang out and listen to more jokes with me?

Knock, knock. Who's there? Otto. Otto who? Otto know what's coming, but here's another knock-knock joke!

Knock, knock. Who's there? Olive. Olive who? Olive a sudden, I have the urge to tell another joke!

Knock, knock. Who's there? Thistle. Thistle who? Thistle have to do for now until I think of a better joke!

Knock, knock. Who's there? Dishes. Dishes who? Dishes a nice place you got here, I like it!