This is supposed to be an audio guide about the painting by Rockwell
http://api.ning.com/files/8dsYT8BAU183WZoT5La-ltXgkf*x6rK2P9i-lSs38FxROuNKyP1z22DzToKfwc1q0WrPsLxdlDaalkn-MvbV-eTtA2Pqt9u*/rockwell.jpg
Here the adolescent is looking at the dining car ticket trying to figure out the bill. The boy is trying to behave like a mini-adult. Yet we can notice that he can't place his feet flat on the floor so we can deduce that he is very young. On the right side of the picture there is a porter who is smiling and patiently waiting for the boy to pay the bill.
Thanks a lot