People reading newspapers or magazines or looking out the windows or talking to each other, trying to forget how uncomfortable they all are. Every bum... and lurch of the subway car causes us to sway, and I'm forced to sway with them. It's all I can do to hang onto the rail, yet I feel like if I let go, I'll still remaining standing, held up by the flood of people surrounding me.It was in this state that I was in the train pulled into the Cortelyou Station. At this stop, as at every stop, I was. I slowly pushed the door open. Sure enough... There she was face down ass up right on my daughter's bed rubbing her pussy like it was her job. I stood there and watched her. My baby sister's 15 years younger than me. She's 23. And her body is fucking gorgeous. As I stood there... All I could think about was getting behind her and eating her twat and her butthole from the back. My cock started to get hard. She was really into it. She had no idea that I was there. I pulled out my prick and I. Suddenly a possibility occurred to me. What if it was the police? My master was always showing me those videos of little girls getting fucked, and I knew full well that they were illegal. I'd even done an internet news search on the topic and had discovered that people were arrested every single day for just possessing what was called "child pornography". What if he'd been caught somehow? What if this was a raid? If it was then they would find me, and I'd have to try and explain what I was. As I pulled in I was disappointed to see that mine was the only car in the vicinity but of course this meant i could do a spot of preparation while I waited.My pussy and cock are always shaved smooth as are my legs as wearing stockings is a requirement at this secluded spot.After all who would want to ladder a pair of soft sheer hold ups anyway?Out came my favourite dildo and my lube (strawberry flavor) and slowly but surely I began to slide it in and out of my widening pussy. I was sitting on.