Truman is working on counting by 5s and 10s. While he was working on his math book the other day, I remembered a Soul Coughing song, where they sing by 5s. I found the CD and we listened to it while he did his work. Later in the day, he was counting and singing by 5s.
David was a big Soul Coughing fan when we were engaged. They were never big in popular culture, but I could stand to listen to it, too. Which is kind of a big deal for me.