This came while we were sitting downstairs in our pajamas this morning playing Zachary's little Thomas the Train computer that teaches letters, among other things.
Mom: Which letter is different?
Zachary: The h (He was right too)
Mom: You're right Zachary! How did you know that was an h? You are such a smarty pants!
Zachary: No, I'm not wearing pants, I'm wearing pajamies!
Ah, I love the literal world of 2!