My two year old

is crazy about knock-knock jokes. When we're in the car he says:

knock, knock
a pause, waiting for any takers. If there is none, slightly louder,
knock, knOCK!
if no one said anything, then he yodels in a high pitch tone
KNOCK, K N O C K ! ! !

It's not that we don't play with him, it's because we've just been knocked-knocked the better part of 2 hours in our mall walking. It goes like this:

TYO (my two-year-old): Knock, knock
Us: Who's there?
TYO: Orange
Us: Orange who?
TYO: Orange you going...blubber, blubber.
Us: ha ha ha
TYO: he he he. so funny!

repeat ad infinitum

He even practices at night, before bedtime. How could we not be delighted with his delivery?