Knock, knock. - Who's there? Hector. - Hector who? Hector days are behind me!

Knock, knock. - Who's there? Doughnut. - Doughnut who? Doughnut forget to buy more milk!

Knock, knock. - Who's there? Boo. - Boo who? Boo all up in your business!

Knock, knock. - Who's there? Lettuce. - Lettuce who? Lettuce in, it's pouring out here!

Knock, knock. - Who's there? Peanut. - Peanut who? Peanut butter and jelly sandwich, coming right up!

Knock, knock. - Who's there? Boo. - Boo who? Ain't nobody crying over here!

Knock, knock. - Who's there? Atch. - Atch who? Atch your back, that was a funny one!

Knock, knock. - Who's there? Europe. - Europe who? Europe-ning the door!

Knock, knock. - Who's there? Robin. - Robin who? Robin you a kiss!

Knock, knock. - Who's there? Cheese. - Cheese who? Cheese a great time for a joke!

Knock, knock. - Who's there? Howard. - Howard who? Howard you like a funny joke?

Knock, knock. - Who's there? Stamp. - Stamp who? Stamp out boring jokes!

Knock, knock. - Who's there? Etch. - Etch who? Etch-a-sketch, draw me a funny one!

Knock, knock. - Who's there? Cereal. - Cereal who? Cereal-ously, tell me another joke!

Knock, knock. - Who's there? Solar. - Solar who? Solar-powered laughter!

Knock, knock. - Who’s there? Idaho. - Idaho who? Idaho, I’ll always love you!

Knock, knock. - Who’s there? Camel. - Camel who? Camel-ot the place to find a good joke!

Knock, knock. Who's there? Warner. Warner who? Warner you look, the funnier it gets!

Knock, knock. Who's there? Avocado. Avocado who? Avocado laugh with these jokes!

Knock, knock. Who's there? Lettuce. Lettuce who? Lettuce enjoy the laughter together!

Knock, knock. Who's there? Police. Police who? Police tell me you're enjoying these jokes!