Which one was I?

In church this morning our minister preached a really excellent sermon based on the parable of the prodigal son.  At one point in the sermon she commented that any of us who have siblings or are the parents of more than one child can relate to the idea of "good child vs. bad child".  As she said this my son, a grown man with two children of his own, who happened to be sitting beside me, looked at me and whispered "Which one was I?" I used the excuse of listening to the sermon to avoid answering, but as I thought about it later in the day, I realized that they took turns.  I have two truly wonderful children who are two years apart in age and as they were growing up they seemed to almost deliberately switch roles.  Invariably, if one of them was going through a sweet lovable stage the other would be going through an ornery, contrary, sometimes moody stage and I came to anticipate the personality swaps about every 18 months.  It went on from infancy through high school, and so dear son, the answer to your question is "You were the good one, except when you weren't."