Knock Knock
Who's there?
Omar!
Omar live who?
Omar goodness gracious, wrong door!

Knock Knock
Who's there?
Omega!
Omega who?
Omega best man win!

Knock Knock
Who's there?
Omelet!
Omelet who?
Omelet'in you kiss me!

Knock Knock
Who's there?
Ooze!
Ooze who?
Ooze in charge round here!

Knock Knock
Who's there?
Opera!
Opera who?
Opera-tunity, and you thought opportunity only knocked once!