[last lines]
Christopher Gardner: How many planets are there?
Christopher: Um... 7?
Christopher Gardner: Seven? Nine! OK, who's the king of the jungle?
Christopher: The gorilla?
Christopher Gardner: Gorilla? Nope. Lion.
Christopher: Yeah, lion, lion. You wanna hear something funny?
Christopher Gardner: OK.
Christopher: Knock knock.
Christopher Gardner: Who's there?
Christopher: Shelby.
Christopher Gardner: Shelby who?
Christopher: Shelby comin' round the mountain when she comes, Shelby comin' round the mountain when she comes!
Christopher Gardner: Hey, that's good.
Christopher: Knock knock.
Christopher Gardner: Who's there?
Christopher: Nobody.
Christopher Gardner: Nobody who?
[Christopher doesn't respond]
Christopher Gardner: Nobody who?
[Christopher still doesn't respond]
Christopher Gardner: A-ha-ha, that's a good one, I like that!