Video Savant?

A few days back, Smith and I went to Blockbuster. At the checkout counter, he said to me, "Dad, today we are getting a kid show, but not a mommy and daddy show." This was indeed true. We were renting some Scooby Doo movie for him, and nothing for Whitley and me. Then Smith said, "Last time, we got a kid show but not a mommy and daddy show. But the time before that, we got both a Smith show and a mommy and daddy show." I thought about it, and he was right. But I had to think pretty hard, because that was four or five weeks ago.