I had gone away on business and had caught a morning train out of London to Birmingham or somewhere north. I had bought a Penthouse Letters magazine which I was reading. As usual these randy letters were turning me on and I could feel a really nice hard-on growing in my trousers. The carriage was pretty much empty except for a young guy sitting in the window seat across from me facing me. Reading more I slid my hand into my lap and began stroking my cock through my trousers. Looking up I realized that the young guy was watching me and was obviously getting turned him on because he was also rubbing his cock through his pants while watching me. Turning back to my magazine I began to rub my cock and balls a little more obviously and much harder. He seemed to like this as he responded in kind also rubbing his cock harder. Putting the magazine down on the table in front of me I alternated between looking him in the eye and looking at his crotch, stroking myself even more. A small smiled flickered across his face. Thinking ‘nothing ventured nothing gained’, I unzipped my trousers, reached in and pulled out my now very hard cock and started to slowly stroke it up and down. Still looking at him I moved around in the seat a little to give him a better view and sat openly wanking in front of him. After a few minutes of this, during which time he didn’t stop looking at my fist on my cock, he too unzipped, took out his cock and started to jerk off. Looking up for a moment he said “Fuck, that’s a really nice looking cock you’ve got there.” “Thanks” I said “you too”. As we sat wanking I remembered another train ride where a guy had sat jerking off in full view. It was about 10 years earlier when I worked in London and I was on my way home by train one night. It was a late train after I’d had a few beers with the boys. I had fallen asleep and opened my eyes to see a guy a few seats down from me looking at a girlie magazine and having a wank. Just sitting there on his own looking at the pictures with his cock out and jerking off. At first he didn’t notice that I had woken up and was watching him. When he did realise he just stared at me for a few seconds then shrugged and carried on wanking. So I sat watching him. Every now and then he glanced up at me but seeing that I seemed ok with it he just carried on. In fact he moved around a bit, so that I had a better view, and even undid his trousers more so that there was more of his cock on view. He also seemed to keep glancing sideways and it was then that I realized I was not the only one watching him. Looking in the window near him I saw the reflection of two women sitting across from him also watching. I think it was for them that he was showing off so much, I was just added spice as it were. As the train started to slow down for the next stop the guy stood up and frantically wanking away he very soon gave a big grunt and shot several loads of spunk over the table just as the train pulled into the station. Putting his cock away and zipping up as if this was the most natural thing in the world and glancing at us he left the train and walked away, leaving puddles of spunk all over the place. Hearing bit of a grunt and as our train started to slow I refocused on the guy opposite me and saw that he seemed to be getting close, breathing heavily and about to cum. Remembering the other time, I stood up so he could see me better and jerking off like mad I soon shot my load as he also came shooting a load of spunk over himself. Realising the train had stopped and this was my station I put my cock away, slid out of my seat, grinned at the young guy, muttered something like ‘that was nice’ and got off the train. As I walked down the platform with the train slowly pulling away I looked into the carriage and saw the guy grinning at me still with his cock out and starting to jerk off again. Hope he found someone else to wank with.