Do many other people do it this way
I stopped masturbating regularly, by which I mean every day, when I was about 19. It's not a preoccupation of mine tho' I still do it occasionally. A few weeks ago a friend of my daughter's who is about 13 I suppose, came round to see her. She wasn't home yet so the friend decided to wait and watch some TV while waiting. I was writng up plans for a work project I had going and not paying much attention to her.
I glanced up after about half an hour and noticed that the friend was sitting forward on the edge of her chair staring blankly at the TV with her legs tightly crossed, and she seemed to be squeezing them together. It was the fact that she was also bright red in the face that caught my attention. I was about to ask her if she was OK when she suddenly jumped up, gasped 'I've got to go to the bathroom' and shot off upstairs.
I had one of those moments when something from the far past suddenly comes back to you, in this case I remembered that as a little girl and into my early teens I used to hold in my pee with my legs crossed until the last minute because it felt so good that I could almost come. I also had a few accidents and think my mother suspected what I was doing and actually used to ask me if I was 'holding it in', so I started doing it in the privacy of my room where I would wank to a proper climax. But it was the feeling that I got with a full bladder and crossed thighs that I suddenly remembered.
I had a look on the Internet out of curiosity to see if there was any literature on it and if it was a very common way to wank, and I discovered Solo Touch. But the closest technique I could find was where you balance on your hands on something like a bed end and hump your pubis against it. It sounds like there's some pressure and tension involved in that as well, but I'd really like to hear if it sounds familiar to anyone. And one last thing, I tried it again and it wasn't half as much fun as when I was 14.