I was standing, rubbing another man's long hard cock with my own. It was so good I had to stop after only a few seconds, since cumming after the first touch of another man's cock on mine would end the fun much too fast - always a danger with first times. Being this turned on is worth enjoying for itself, which you learn to appreciate after a few other first times ending deliciously fast. Especially when who knows what would happen in a few minutes? I kept pumping his hard uncut cock, which was long and thin, bending towards the right. This had been a fantasy which had taken root over years, and now for the second time, I was getting off with an anonymous man at a glory hole. In some ways, it was already hotter than my first time. This could become a very pleasant way to spend time.
A few weeks ago was the first time I got off at a glory hole, first watching porn and getting hard, then hearing the door to the next booth open, getting really hot imagining and then watching the cock on the other side of the wall getting stroked, almost cumming at the first touch of another man's hand on my body, then cumming, unable (and utterly unwilling) to stop the hot semen rising from my balls so good as he stroked my cock, his arm reaching through the glory hole. After which I jerked him off in a few strokes, his spurts starting as I touched his cockhead coming through the glory hole - he was as turned on as I was. It was hot, hard, and fast. The faceless sex of hard cocks cumming was enticing, and very easy to understand and share.
I had gone back to the video store a few times since then, but apart from getting off to the porn, which has been a fun habit over decades, the other booth stayed disappointedly empty. The porn selection was good, with a MMF selection always getting me stiff, and several other good videos with men and women simply getting off - a couple in a large bathing space were getting into each other over a period of time and positions, half clothed, then naked and dry, then fucking, then wet, and so on through a number of very enjoyable variations. The woman getting fucked was sexy to watch, with dark pussy fur and hair, nice tits, and what seemed natural pleasure overtaking any acting - which certainly made sense to my cock as it also grew harder watching her. It was good porn to get off to, certainly. But the reality of touching another man's cock with my hand had been exciting without fantasy, and watching him was a fine way to enjoy someone's sincere pleasure matching my own.
Over time, the fantasy which grew often as I jacked off, alone, was to touch and stroke another hard cock with my own. I also did spend some time in the booth figuring out how to stick my cock through the opened gap - neither easy nor difficult, and not too awkward. It is natural to put one arm up and press against the hole, like the man at a glory hole getting off seen from behind, his ass tight and pushed against the wall in a picture I saw years ago in a German magazine, which essentially opened this area of eroticism to me. The idea of a truly shared but unknowing orgasm was a game that men obviously played, and I wanted to join in. My first time had been 'passive' and 'just happened,' but it seemed time to learn how to be more clear in my wishes. In my experience, women don't understand the entire rush behind getting off this way. A hard cock is pure sex, and pure sex makes a cock hard. The logic is pretty circular, the way fingers or wet lips or glistening pussy is. Or the way a hard cock is itself. And cumming is its own joy - and making someone cum too. You don't need anything else at all as an explanation for those who have shared it.