1: Knock knock.
2: Who's there?
1: Yoda lady.
2: Yoda lady who?

1: Knock knock.
2: Who's there?
1: Tank.
2: Tank who?
1: You're welcome.

1: Knock knock.
2: Who's there?
1: Nobel.
2: Nobel who?
1: Nobel that's why I knocked.

1: Knock knock
2: Who's there?
1: 