The other day I was trying to make a point while talking with Ethan. I tapped his knee and said, "Did I tap your knee?"
Ethan: "I dunno. Maybe."
Me: " I did Ethan. You *saw* me do it."
Ethan: "Maybe it wasn't you."
Me: "Ethan, really, it was me. I'm the only person who could have done it."
Ethan: "No you're not. Maybe a ghost did it."
Me: "A ghost?"
Ethan: "Right. There's lots of things we don't know and can't prove and you can't say for sure that there aren't ghosts. Maybe one just controlled your hand and tapped my knee."
Me: "Ummm. OK, but I know I did it."
Ethan: "At least you think you know you did."
I love the way his mind works.