Knock-knock!

We were in the car making up Knock-Knock jokes (a usual practice for the Massey family!). Nicholas thought it'd be GREAT if he could trick his sister with the banana rendition. For those who are not familiar it goes like this:

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

So...he tries this on his sister and we hear:
N: Knock-Knock
R: Who's there?
N: Banana.
R: Banana who?
N: Knock-Knock
R: Who's there?
N: Banana.
R: Banana who?
N: Knock-Knock
R: Nichooolaaaaaas! (can you hear her whining?)

Then she proceeds (without hesitation):
R: Knock-Knock
N: Who's there?
R: Banana Knock-Knock!
N: Banana who?
R: Knock-Knock banana!
N: Who's there?
R: Banana Knock-Knock! Knock-Knock banana!

...roars of laughter! And Robin thinks she has been successful with the "joke"!