Accidental Touch

You are a girl traveling alone on a train. You are sitting by the window, wearing a short skirt, and your legs are bare. An older man is sitting in the seat next to you. During the journey, you notice his hand touching the side of your leg. At first, the contact could conceivably have been caused by the movement of the train. But he doesn't move his hand away. You now have to decide how you want to respond. This is something that happend to me and I use this talkie to work though some possibilities.