The gobs dribble down your legs. The train stops. The doors slide open. A tide of people rush out of the train, carrying you with them like a piece o...f driftwood. On the platform you step out of the flow and pause away from everyone heading onto the escalator. You examine the backs of your legs. Creamy wet splotches dot the shiny black fabric of your stockings. You look around, trying to catch sight of the person who just did this to you. Who was it? Not a clue. The train pulls out of the. Steve slid his hands on my legs till he reached my heels and lifted them up above my body and said '...you asked for it now I'm gonna give it to you...' For the first time since we met I got scared as Steve held my ankles tight and started to ram his dick in and out my opened bung. I start to moan slightly at first then whine and finally started to cry out in anguish as Steve undetermined begin to slam his mid section along with his huge dick int my unprotected butt hole. Reflectively I reached. First they had me expand my knob, and they definitely enjoyed having that wider. That experiment was so successful, they wanted to widen the whole shaft. That turned out to be an even more successful experiment; they declared it to be a "fucking fantastic success."I'd never thought to measure the width of my cock before the changes started so I can't give you a quantitative description of the change. Let's just say it went from "able to rest in my palm so I could easily close my fingers around. Lucky for me she knew how horny I was and reached over and started to jerk my cock for me just seconds before her mouth moved over on top of it. Her mouth and tongue were so warm. She knew how to swirl her tongue around my cock while it was inside her mouth. She had been stroking Mark while sucking me and then she pulled his cock over closer and pushed it against my own and she crammed both our cocks in her mouth at once. She could only get three or four inches of both of us in but it was.