Knock Knock
Who's there?
Duane!
Duane who?
Duane the bath, I'm dwowning!
Knock Knock
Who's there?
Dummy!
Dummy who?
Dummy a favour and go away!

Knock Knock
Who's there?
Dunce!
Dunce who?
Dunce-ay another word!

Knock Knock
Who's there?
Dustin Hoffman!
Dustin Hoffman who?
Dustin Hoffman welcome mat for you!

Knock Knock
Who's there?
Dwayne!
Dwayne who?
Dwayne in Spain falls mainly on the plain...!