Knock! Knock! Who’s there? A…

Knock! Knock! Who's there? Noise. Noise who? Noise to see you!

Knock! Knock! Who's there? Irish. Irish who? Irish you a Merry Christmas!

Knock! Knock! Who's there? Boo. Boo who? Hey, don't cry!

Knock! Knock! Who’s there? Leon. Leon who? Leon me when you’re not strong!

Knock! Knock! Who's there? Owls say. Owls say who? Yes, they do.