Knock! Knock! Who’s there? Iona…

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

Knock! Knock! Who's there? Amish. Amish who? Really? You don't look like a shoe.

Knock! Knock! Who's there? Wooden shoe. Wooden shoe, who? Wooden shoe like to know!

Knock! Knock! Who's there? Opportunity That's impossible. Opportunity doesn't come knocking twice!

Knock! Knock! Who's there? Gorilla. Gorilla who? Gorilla me a hamburger.