Banana Banana

You've probably heard this horrible knock-knock joke, but it was new to Aaron and he thinks it is funny.

Knock, Knock
Who's there?
Banana.
Banana who?
Banana Banana.

Knock, Knock
Who's there?
Banana.
Banana who?
Banana Banana.

Knock, Knock
Who's there?
Banana.
Banana who?
Banana Banana.

Knock, Knock
Who's there?
Banana.
Banana who?
Banana Banana.

Knock, Knock
Who's there?
Banana.
Banana who?
Banana Banana.

Knock, Knock
Who's there?
Orange.
Orange who?
Orange you glad I didn't say Banana?

I told him this joke the other night while feeding him a banana. He obviously doesn't get the punchline, but after I repeated the first part a few times, he started laughing just when I said Knock, Knock. There's just something funny about saying banana twice.