A little Pun goes a long way

Jadyn is sitting with Julie and Karina right now and going over her spelling/reading word lists for school. She came across the word 'pun'...

Jadyn: Mommy, what's a pun?
Daddy: A pun is a joke like Grandpa tells.
Jadyn: Which one?
Daddy: Here's an example - What did the cow say to the other cow when he wanted to sit down?
Jadyn: I don't know
Daddy: Mooooooooooove over!
Jadyn & Karina: laughing
Daddy: See - the 'pun' part is the Moooooo in move. The answer is 'move over', but it's a pun because you say 'Mooooooooove over.'
Karina: Yeah. It wouldn't be a pun if the cow said, 'Si-iiiiiiiiiiiiiiii-t down'.

I don't know if it translates as funny when you read it, but the way she didn't skip a beat and just blurted it out so matter-of-factly had us rolling on the floor. She's so funny and doesn't even try hard to be - we love it!