Last week I took the kids to a park that has a sidewalk all around it. I pushed the two little ones in the stroller and Thomas rode his bike. Thomas rides faster than I can walk, so he was a bit ahead of me. He stopped, staring at the ground. When I caught up I saw that he was looking at two shoe prints in the cement. He sounded totally amazed when he said, "Wow, look Mom...someone had REALLY HARD SHOES!"