Knock, Knock.

[William51]

Knock Knock. Whos there?. Tank. Tank who?. Youre welcome!.       Knock Knock. Whos there?. Wooden shoe. Wooden shoe who?. Wooden shoe like to know!.                                                              Knock Knock. Whos there?. Iva. Iva who?. Ive a sore hand from knocking so long!.                                                                   Knock Knock. Whos there?. Police. Police who?. Police stop telling me these awful knock knock jokes!.

[Moorea7]

Knock knock
Who's there?
Knock knock
Who's there?
Doorbell repairman.