Knock, knock.
Who's there?
Police.
Police who?
Police hurry up, it's chilly outside!
Knock, knock.
Who's there?
Snow
Snow who?
Snowbody!
Knock, knock.
Who's there?
Oscar
Oscar who?
Oscar a silly question, get a silly answer!
Knock, knock.
Who's there?
Fork
Fork who?
Fork-get it, I'm leaving!
Knock, knock.
Who's there?
Andrew!
Andrew who?
Andrew a picture!
Knock, knock.
Who's there?
Shocking.
Shocking who?
Shocking you!
Knock, knock.
Who's there?
Robin!
Robin who?
Robin your house!
Knock, knock.
Who's there?
Kanga
Kanga who?
Actually, it's kangaroo!
Knock, knock.
Who's there?
Cook.
Cook who?
Yes you are!
Knock, knock.
Who's there?
Tank.
Tank who?
Your welcome!