Knock! Knock!

Nicholas loves Knock! Knock! jokes, even if he doesn't understand them. Here is his most recent one. Notice his punch line at the end....

Nicholas: Knock! Knock!
Mommy: Who's there?
Nicholas: Banana
Mommy: Banana who?
Nicholas: Knock! Knock!
Mommy: Who's there?
Nicholas: Banana
Mommy: Banana who?
Nicholas: Knock! Knock!
Mommy: Who's there?
Nicholas: Orange
Mommy: Orange who?
Nicholas: Orange aren't you glad I didn't say banana again? Ha! Ha! Ha!

Cute little guy! He can ruin a classic knock knock joke but it really just makes it even funnier!