So, pre-pandemic, I would commute to work on the subway and it was usually super crowded. One day, there were terrible delays, and everyone was crammed against each other. My arm was up, palm flush on the roof just to keep my balance. There was a woman pressed up against me with big tits, my raised arm pressed against her tits, basically laying across her cleavage. I was so hard and spent the next 30 minutes essentially humping her leg briefly numerous times due to the crowd and the train motion. I could have sworn there were moments the train movement and crowd were not responsible for her body pressing more roughly back against mine.

Separately, my cock is much larger than average and now when I ride, I constantly give myself a semi when wearing tighter slacks. I love catching women checking out the bulge. It drives me wild. New kink discovered!