I can't argue with this.

Kai: Hey Dad?
Me: Yeah...
Kai: Why do some dogs have no fur on their belly?
Me: Umm, I'm not really sure, but I have a better question.
Kai: What?
Me: Why do you continue to ask me weird questions like this? I'm your Dad, not your personal encyclopedia.
Kai: Well, you kinda are. You are my funny personal encyclopedia that is more than half right most of the time.
Me: Ok.