Now I've heard of women being able to do that but I've never heard of any men that can. I taught myself how to do it because I've always been an extremely horny person and tend to have a hard time concentrating if I'm hard at the time and cumming is the only way to regain my clarity. And obviously i can't always go waste time in the bathroom handling buisness so i figured out away of positioning it and inconspicuously pin it against my thing and from there i just control my breathing amd flex/relax my lower body muscles and usually i can finish in under 3 minutes and be able to focus again. The annoying part is walking around with my jizz stuck to me
in that case, what is your "thing"? i assumed that was your cock, but i don't see how someone could pin their cock against their cock.