Knock knock.
Who's there?
Donut.
Knock knock.
Who's there?
Donut.
Knock, knock.
Who's there?
Nacho.
Nacho who?
Nacho Cheese!
"Knock knock." "Who's there?" "You're." "You're who?" "You're parents left you."
"Knock, knock."
"Who's there?"
"Mary."
"Mary who?"
"Marry me!"
Knock knock. Hus dare? Luke. Luke who? Luke through the window and you'll see.
Knock, knock. Who's there? Little Boy Blue. Little Boy Blue who? Michael Jackson.
Why did Sally fall off the swing? "Why?" 'Cause she had no arms.
Why did Sally drop a broom? "Why?" 'Cause she had no arms.
Why did Sally go swimming? She didn't like not having arms.
Knock knock. "Who's there?" Not Sally, she hasn't come back yet.
Knock, knock.
You suck my iron with you and mommy.
Why did the chicken cross the road? To get to the idiot's house.
Ok, wanna hear another one? Okay. Knock knock. (Who's there?) The chicken from the other joke.
I told Siri about my dog, and she told me if she could tell me a joke to cheer me up, and I said okay.
She asked me, "Knock knock." I said, "Who is there?" She said, "Not your dog."