9yo hopped into my bed in the early hours after The Linux Geek left for work. After chilling for a bit he asked me: "Is this real or is this a dream?"
"I think so," I replied after a moment's hesitation. "There's a creation myth, can't remember whose, maybe one of the Native American tribes, about how the entire universe is the dream of some god and when that god wakes up we'll all stop existing."
Then he asked, "What if every atom was a universe, and all the atoms in that were universes as well?"
I answered that I had had similar thoughts previously and there had once a theory involving fractals and everything being repeated at different scales...or something to that effect. We then imagined containing bazillions of tiny little universes and our entire universe being an atom inside something phenomenally huge to us which might be an ant in that outer universe.