I remember back when my oldest daughter was about 3 years old. I was sitting on the bed folding laundry when she walked in. I happened to be folding her little underwear at the time, emphases on "little". She would pick up a pair and do her three year old best to fold them. THEN she grabbed a pair of my underwear. Now mind you I didn't think they were that big, she looked at me, her eyes grew huge and said, "Whooo, whose are these?"
You gotta love'em.