Knock Knock!
Who's there?
Police.
Police who?
Police let us in; it's cold out here.

Knock Knock!
Doris.
Doris, who?
Doris locked, that's why I had to knock!

Knock Knock!
Who's there?
I love.
I love who?
I don't know, you tell me!

Knock Knock!
Who's there?
Norma Lee.
Norma Lee who?
Normalee I don't go around knocking on doors, but do you want to buy a set of encyclopedias?

Knock Knock!
Who's there?
Tank.
Tank who?
You're welcome!

Knock Knock!
Who's there?
Wendy.
Wendy Who?
Wendy Red Red Robin Comes Bob Bob Bobbing' Along...

Knock Knock!
Who's there?
Yo momma.
Yo momma, who?
Yo mama that's yo momma who, open the door!

Knock Knock!
Who's there?
Mary Lee.
Mary lee who?
Mary Lee we roll along.

Knock Knock!
Who's there?
Spank.
Spank who?
Spank you!

Knock Knock!
Who's there?
Goat.
Goat who?
Goat to the door and find out!