Knock Knock!
Who's there?
Gorilla.
Gorilla who?
Gorilla cheese sandwich for me and I'll be right over.
Knock Knock!
Who's there?
Butter!
Butter who?
Butter open quick, I have to go to the bathroom!
Knock Knock!
Who's there?
Trixie.
Trixie who?
Trixie couldn't do because he was a bad magician!
Knock Knock!
Who's there?
Sam.
Sam who?
Sam person who knocked on the door last time!