Seeing Double

At a birthday party last weekend, two of the young guests were identical (and identically dressed) twin boys. One of them made the mistake of pushing The Roc. As I have trained him to do in these situations, The Roc found me and ratted him out. A mommy conference ensued, apologies were made and conciliatory high five exchanged. End of story? No. A couple of minutes later, out of the corner of my eye, I caught The Roc hitting the OTHER twin. Why? "He pushed me!" It took me a good few seconds to figure out that The Roc didn't realize there were two of them.