You are on the Tube. You have a short a-line skirt on. Above the knee nothing too daring. You are wearing black tights, knickerless. Your knees begin to part. You can see that the elderly gentleman opposite has noticed. The tube is quite quiet so your legs open wider as you turn to talk to me sitting next to you ignoring the man opposite. By this time your legs are as wide open as they can be and I put my hand between your thighs and smile over at the elderly gent. We are out in the suburbs and the carriage is now empty. We stand up as if to get off the train but you walk over to the man and run your crotch against his face. I am next to you with my cock out as you wank me slowly. The man alternates between licking you and sucking me...

This scenario happened. The lady was an American tourist that I had met online and was an exhibitionist. She wanted a chaperone who would join in and I was only too happy to help. This was one of many adventures that week. 

I have done similar with other women and also convincing T-girls (which is always interesting to see how people react when they hadn’t initially realised) This is what I am into. Let me know if you are also