Me: (looking up at the ceiling) Santa, did you see that?
Lennon: (looking up at the ceiling) Who are you talking to?
Me: Oh....nothing. Just asking if Santa saw you throw that ball in my face.
Lennon: What's he gonna do?
Me: Well, kids who throw stuff in other people's faces don't usually get presents on Christmas, that's all.
And so on.
In fact, today Lennon picked up all his toys then looked up at the ceiling and asked, "Santa, did you see THAT?"