Paul Z.

Knock! Knock! Who's there? Tank Tank who? Tank you! Knock! Knock! Who's there? Amos Amos who? A mosquito bit me! Knock! Knock! Who's there? Lettuce Lettuce who? Let us in! It's cold out here! Knock! Knock! Who's there? Wendy Wendy who? Wendy red red robin comes bob bob bobbin along... Knock! Knock! Who's there? Boo Boo who? Why are you crying? It's only a knock knock joke!

rating: PG