Many years ago, during my first trip abroad as an adult, I was staying and playing in a place near the ocean. Every day I would take a bus to the beach and lie all day in the sun. After the day was done, I would take the bus back to my lodging. One day, I happened to return to my place from the beach during rush-hour, and the bus was getting very full. There was standing room only, and I found a place to stand towards the back of the bus. With each stop, more and more people shoved in (they don't have the same health and safety regulations that we have in the US), and we started to be pressed against each other. I was wearing my Brazilian thong bikini and a sarong tied around my waist and that was it. The guy standing directly behind me was wearing wet swim trunks and no shirt. My sarong started to get wet from his shorts, and as we got closer and closer with each stop, I could feel the heat of his groin. As the bus hit bumps in the road, his groin would rub up against my buttocks, and sure enough, his cock began to grow. I felt it, hot and hard against my ass, and I began to get wet. I could feel my pussy lips swelling with desire as I fantasized about bending forward, rubbing my ass all over his cock, and pulling my sarong and bikini bottoms aside to let him slip it it. I imagined how smooth his cock would be, how soft his foreskin would feel against my lips. How deeply he would go. As a single, attractive woman traveling alone in that country, I knew better than to encourage anything because I had no idea what he looked like or anything else about him. I didn't look back to see what he looked like. I made no move to step away from his groin, either, and even when the road was smooth, I felt him shoving gently but harder against me- just enough to feel his throbbing desire, but not enough to be able to say that he was purposefully doing it. His cock was vertical in his shorts, and with a few successive lurches of the bus, it found its way nestled between my cheeks. He pressed closer, closer. It was hard against me, and part of me wanted it. I moved imperceptibly against him- just enough to feel his throbbing desire, but not enough that he would know I was purposefully doing it. The lurching and bumping of the ride gave us both opportunities to enjoy this erotic dance of friction. I fantasized further about him fucking me senseless from behind. I could feel that he was rather larger than average. As the bus reached capacity, his cock was so hard I thought it might explode against me with another bump in the road, but it didn't. Soon, the bus began to deposit more people than it was picking up, and the crowd wasn't as tight. People began to move to make room for each other so we wouldn't be as cramped. Neither he nor I moved an inch. His stop came up before our choice to remain steadfast where we were became noticeable by others, and when he exited the bus and walked away, he turned back to look at me through the window. It was the only time our eyes met the entire journey. Upon returning to my lodging, once locked safely in my room, I pulled out my vibrator and masturbated with it. I fucked him every which way but loose during my self-pleasuring session. I'm sure he did something similar at his first opportunity. I loved that he was respectful enough to not take advantage in a predatory way, but that he and I both allowed our bodies to meet and have that experience.