The boys are spending the night with my parents and M. was really excited to pack his suitcase. I told him what he needed, so he went through his drawers to collect the necessary items. He packed one pair of jammies, and when I suggested that he pack an extra pair, he said that he was only going to be there one night. Then, he paused, and said "maybe I should bring another pair just in case I go pee pee in the middle of the night". Such a smart little boy!