Orgasm without masturbation (PE)

My answers below:

Have you ever ejaculated to porn without using anything to stimulate your genitals with?
That's how I always do it now, because the normal way no longer has much appeal.

What do you specifically link it to? Is it complete mental arousal, or is it the potential overuse of the BC muscle, or something else?
For me it is pelvic floor muscles along with looking at porn or p-sub - probably that BC muscle is one of the muscles involved.

What are psychological/physical implications of it?
Good question. I'm feeling kind of brain dead right now, because I just finished a PMO binge. My first thought would be that the psychological implications are similar to other ways of PMO except that relying on pelvic floor muscles without any other stimulation inevitably results in tortuously long edging sessions. A typical session for me is 12 hours. For that effort I might experience 10 non-ejaculatory prostate orgasms. Definitely not worst the cost, but I'm addicted and I can't seem to go back to the normal way of PMOing with my hand and lubrication.

This is a really unique hypothesis, but I have noticed that this sometimes relates to a more feminine mindset as well as having less testosterone, because I think that:
I think I'm a little bit effeminate for a man, but my testosterone is normal for my age. I might get it tested again, because I've always assumed I have lower than normal testosterone. My voice is kind of high pitched and my bone structure is delicate like a woman's. It seems it must be low.

a) I often read about 'sissies' doing that, or I have seen 4chan gifs of them orgasming with no physical stimulation
Yeah, I have seen videos clips like that. The difference is that typically the sissy has an anal toy inserted and then the penis begins ejaculating or dribbling small amounts of either semen or prostate fluid repeatedly. For me, I don't use any stimulation except the pelvic floor muscle contractions and occasionally brushing my legs a little bit. My penis usually doesn't ejaculate anything - it just moves up and down involuntarily while I feel the mild prostate orgasm pleasure. Sometimes after many hours or torment one of these prostate orgasm crosses-over into a normal ejaculatory orgasm of either prostate fluid or semen.

b) Women can experience orgasms much more often than we can, I don't think they have a cooldown. Since I can orgasm with little to no physical stimulation now, my cooldown has drastically reduced. It's like there is a male-female balance in the universe, or our species, and we can somewhat lose the balance and go to the other side, yet not quite due to our inherent biology
The prostate orgasms can repeat without a refractory period. Typically I will experience 3 or 4 in a row over 5 minutes, and then I continue with the porn viewing and pelvic floor muscle contractions for an hour until it happens again. That goes on for hour after tortuous hour until I can barely keep my eyes open. It becomes a trap for about 12 hours typically.

I'm interested in the stories and the potential causes of this phenomenon. Cheers
For me, the root cause was POIS (post orgasmic illness syndrome). Ejaculations give me a wretched hangover for about 24 hours. After an ejaculation I usually have lots of brain fog and depression and basically can't do anything besides feeling miserable. It's normal to have a refractory period of an ejaculation, but for me it is a 24 hour hangover.

As I aged the POIS became worse. When I was 20 I could ejaculate at most three times per week before I would get POIS. When I was 40 I couldn't even ejaculate once a week without getting POIS. So I became interested in these fabled prostate orgasms that could be repeated without ejaculating. I thought that would be the solution.