Knock Knock Collection 200
Knock Knock
Who's there?
Yucca!
Yucca who?
Yucca catch more flies with honey than vinegar!
Knock Knock
Who's there?
Yukon!
Yukon who?
Yukom say that again!
Knock Knock
Who's there?
Yuri!
Yuri who?
Yuri great friend!
Knock Knock
Who's there?
Yvonne!
Yvonne who?
Yvonne to be alone?
Knock Knock
Who's there?
Zaire!
Zaire who?
Zaire air is polluted!