As the train gathered speed and the motion of the carriages fell into a regular rhythm I could feel my prick harden a little. He evidently felt this a... well though he gave no outward sign. In a few moments he started to clench and relax his butt cheeks and pressed his whole body back against me hardening my cock even more that before. It was very clear he was also enjoying the sensations.I had no idea if he was alighting before me or if his stop was after mine so I just enjoyed the proximity . The lordosis is a swayback. The kyphosis and lordosis that I had were larger curves than those that are normally found in boys. He said that later on in life these curves could cause some severe back problems. He said that the S shaped curve that I had were at angles that were closer, but even exceeded those of a normal girl. Well, later in life, my back does give me some trouble.When I returned to school, I had special exercises that were shown to me by a physical therapist to do regularly.. " She slipped one shoulder out and the camisole fell, exposing one breast completely and barely covered the other. Her hand cupped her breast softly, kneading it like dough, with her white skin oozing out between her fingers." Do you like this Amanda? She does look like you, don't you think?" Dad grinned looking at me watching the movie closely. I nodded and continued to watch the girl's actions. "You should try that Amanda, see, what she just did, touch yourself like that." Without thinking,. ”I trip up once more on number 4 and we go back yet again. By this time, I am shaking and burning, and yet, I can feel my cock straining against the cage and no doubt leaving a puddle in the reservoir. How can this make me more aroused than I was before? It hurts like hell, but I am naked and splayed, which in itself sends visions of lewdness through my mind. I am such a sex hound. Everything stirs me. I should have known. . but this?? Nooo, never this. But it is. It does. I don’t want more of.