Minor brain hurt.
I took my youngest daughter, who is 3 months old, to the doctor this morning. When I was in an examination room with a tech, she was making conversation with me, and asked, "So, is this your youngest child?" About a three-month-old. It would be pretty hard to have another child younger than her! It's only a minor brain hurt, however, because she was just making conversation and wasn't really thinking too hard about what she was asking. But I still thought it pretty hilarious.