Knock knock. Who's there? Alpaca.

Alpaca who? Alpaca the suitcase, you load the car!

Knock knock. Who's there? Wait.

Wait who? Wait a second, I thought *you* were supposed to tell *me* who's there!

Knock knock. Who's there? Wire.

Wire who? Wire you not opening the door?

Knock knock. Who's there? That's what I'm asking.

That's what I'm asking who? That's what I'm asking who wants to know who's on the other side of this door!