Sammy it's time to get up

This morning I went to wake up John David to get ready for school. He came down from his bed and then told Sammy to get up. In typical Sammy fashion he said "oh, thanks." I asked John David why he woke up Sammy, he said because Sammy told him he was crying that morning when he didn't get to say good bye. Apparently there was some talking in their room last night before they went to bed. Makes me curious...what do they talk about?