DS4 knocked off Santa a few months ago. Passing an adult conversation re the need to relocate to the south pole he paused to tell us "but I know Santa isn't really real, it's just people you know who give you presents." And then he and DS6 added the Tooth Fairy and the Easter Bunny to their hit list. I was shocked at first - we have always put some effort into laying it on pretty thick.

But generally, to hear them talk you'd swear they believed - they love the idea and are happy to play along.