I used those once. That was enough.
Your dick feel like a big cold spongy thing. No thank you. There are better ways to promote ejaculatory control.
Interestingly enough, the perineum press - done within it’s proper context - is one of them.
The perineum press is mostly harmless. While avocet’s point is well taken, he presents a worst-case scenario. Using this tactic as a way of learning to control ejaculatory response is an effective tool that goes back for centuries. Taoist practices incorporate this technique in their sexual Kung-Fu scheme. While it’s true that you wouldn’t want to use this technique over much, it is unlikely it will significantly weaken your bladder valve unless you become unusually compulsive in the practice or have a predisposition within your own urinary tract. A normal, healthy person can certainly tolerate a few perineum presses every so often.
The Multi-Orgasmic Man (essentially a Taoist-based sex manual for men) recommends this as a way of learning how to approach the ejaculatory response should you get too close and fall over the edge while you are training yourself to ride the waves of orgasm prior to actually ejaculating (orgasm and ejaculation being two different things).
I would recommend that you read this book, and perhaps a few others as well, that deal with methods for re-training the sexual response before reaching for the benzocaine. That stuff is just weird, it makes ejaculating an unpleasant experience. And if you should accidentally get any on your ladies clit, she won’t be cumming any time soon either.
Before: I'd like to show you something I'm very proud of, but you'll have to move real close.
After: I\'d like to show you something I\'m very proud of, but you guys in the front row will have to stand back.
God gave men both a penis and a brain, but unfortunately not enough blood supply to run both at the same time. - Robin Williams (: