Knock, knock.
Who's there?
Abby.
Abby who?
Abby birthday to you!
Knock, knock.
Who's there?
Nose
Nose who?
I nose plenty more knock knock jokes!
Knock, knock.
Who's there?
Zoom
Zoom who?
Zoom did you expect!
Knock, knock.
Who's there?
Dozen.
Dozen who?
Dozen all this knocking bother you already?
Knock, knock!
Who's there?
Moustache!
Moustache who?
I thought I moustache you a question, but I can shave it for tomorrow.
Knock knock Who's there?
Doohoo Doohoo who?
Ooh don't cry!