Well you can pinch something to keep from ejaculating but it's not a muscle. You can pinch off the tube that connects the prostrate which will keep the semen from leaving the prostrate. This is located right where the pen*s attaches to the body at on the bottom side. Its not very pleasurable though and most people don't do it more than once since its not that great.
Ya, NOT a good procedure. What happens usually is you still ejaculate but the seminal fluid goes the other way into the bladder or even just sits there but it is like holding your nose during a good sneeze. You're liable to blow a gasket in there. NOT a good practice.
The thing to do is right after your orgasm KEEP going. It's a matter of control - after an orgasm so you can keep going. The later orgasms will be harder to achieve so that will probably be good for your partner.
Block or pinch your orgasm and you could do damage to the vessels that carry sperm and seminal fluid or, even worse, the blood vessels that are responsible for your erection.
This message has been edited. Last edited by: mod_kelly,