4-y-o T: N, I’ll tell you what a ghost is.
8-y-o N: What?
T: A ghost is white. You’re not white.
N: Neither are you.
N & T, discoveringly: We’re not ghosts, then!
(earlier, in the bath, they were playing some sort of game that involved a cyclops hurling rocks onto a ship (from The Odyssey), with Gilgamesh and Enkidu and Donkey Kong steering the ship after the captain was killed by the boulders. I think there were some other characters involved, but I was laughing too hard to tell…)