Long Pause, then:
Urban Kid 1: Mom, is there actually a Santa Claus?
Me: (ooooo boy, here we go...) Uhhmmmm, interesting question, honey. Do you like thinking there's a Santa?
U-Kid 1: Yeah, (deep breath) but I just don't think there is one.
Me: Does it just all seem too good to be true?
U-Kid 1: Yeah, it really does.
Me: Well, you're pretty smart about most things. Including this one. (she nods thoughtfully while I attempt a reassuring smile) But it's fun for a lot of the other kids to believe in, especially the smaller ones. So now that you know, you have to keep it special for the other kids, okay? Show how you can be a big kid and let the others have fun with the idea, right?
U-Kid 1: Ok, I won't give it away. But, Mom?
U-Kid 1: How do all of the presents get delivered, then??
Growing up, figuring it out, but still kind of innocent about it all still, too. It's interesting to watch.