Knock! Knock! Who’s there? Bruce…

Knock! Knock! Who's there? Goliath. Goliath who? Goliath down, thou looketh tired!

Knock! Knock! Who's there? Robin. Robin who? Robin you, now hand over the cash!

Knock! Knock! Who's there? Mustache. Mustache who? Mustache you a question, but I'll shave it for later

Knock! Knock! Who's there? Dozen. Dozen who? Dozen anybody want to let me in?!

Knock! Knock! Who's there? Avenue. Avenue who? Avenue seen it coming?