Knock Knock
Who's there?
Benin!
Benin who?
Benin shopping lately?

Knock Knock
Who's there?
Bera!
Bera who?
Bera necessity!

Knock Knock
Who's there?
Berlin!
Berlin who?
Berlin the water for my hard boiled eggs!

Knock Knock
Who's there?
Bernadette!
Bernadette who?
Bernadette ate all my dinner and now I'm starving!

Knock Knock
Who's there?
Bertha!
Bertha who?
Bertha-day greetings!