Don't underestimate children. They are able to think double-tracked.
A little girl feeds her doll with a spoon. "You must eat, you are sick, one for uncle Carl, one for Aunt Edith, you are a good kid..."
Mother laughts: "But your spoon is empty!"
Girl: "Of course, because it's a doll and can't eat!"
Shit. Blue screen. Now I have got a script error... script error... script error.... script error...