Knock! Knock! Who’s there? Oswald…

Knock! Knock! Who's there? Stopwatch Stopwatch who? Stopwatch you're doing and pay attention!

Knock! Knock! Who's there? Needle. Needle who? Needle little help gettin' in the door.

Knock! Knock! Who's there? Yukon. Yukon who? Yukon say that again!

Knock! Knock! Who's there? Andrew! Andrew who? Andrew a picture!

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