I've learned that too much attention to what kids are doing in public tends to embarrass parents, so I returned my attention to my line. But a few moments later it was drawn back by calls of "and now we bow, and now we bow!" And there was the little girl making exaggerated, careful bows - grinning when she saw I was smiling at her. Her brother took a little prompting, but he joined in and soon they were both hamming it up for me.
They were so free, their fun enhanced by the audience rather than inhibited. It was a pleasure to watch them, and I find myself thinking about them alot tonight.