distinctive prostate orgasm?

@darwin. I have experienced everything you have described in your post, except the prostate orgasm, but I am really close to it!

Darwin. Sounds ecstatic. How did you discover it? Aneros? (which one) or ALESS? Please tell us more about your discovery. Was it a different feeling in a super O? Dry O? What was that feeling like and how did you develop it? Thanks for you patience as an honored master in this new world of discovery and rebirth for us men. Thanks also for remaining active on this site after the makeover.

Yeah I have had the sensation of something inside contracting on its own. Like muscles where no muscles should be.
It came as a surprise to me... then reading some of the super-orgasm descriptions, people actually mention "prostate contractions", which is a phrase I had read-past so many times without stopping to consider what that actually meant. It's only in the past few months that this has even been on my radar. I always considered the prostate a passive lump that sits there waiting to be rubbed. But now I'm thinking there's another path I haven't been down... a path that I've since been exploring and making slow progress on.

What I get is a feeling of the Aneros nestling against my prostate. Nudging it; like a cat would do with its head, or wave like bobbing; like you could do with your tongue.
My penis will grow to 100% hard when I orgasm from it (sometimes it won't). With normal masturbation, I don't get that hard.
Eventually, it will waver and my erection with it, sorta flopping in and out of erection or remain half way. If the device or prostate keeps going during orgasm, it will shorten the fall off. I can get multiple orgasms from this. Sometimes it's gone after just one.

Where it differs from what you are writing, @darwin, is that you describe your orgasm as a full-fledged ejaculation. What I am having feels more wave like; where they keep amping up, eventually into orgasm. Would you say that yours is more localised?
As far as intensity goes, they can go beyond what a normal ejaculation is like. There's also the longer duration of it and the fact that there can be multiple.
The only thing that tops this for me is a more tranquil full body type of deal. But I had those twice. What I describe above happens more often but is still quite rare.

mitaru, i've had many different types of orgasm with the aneros, and without. there is a post somewhere in which i list them all.

but, here, i am describing a specific kind that is new to me. yes, it is localized to that mini-cock buried beneath the base of my cock (probably my prostate). it feels like a cock ejaculating, but it is not.

this has the distinct feeling of this organ contracting itself hard over and over, in orgasm.

darwin

That does sound different yeah. It's sounds great though.

I often read about this 'feels like ejaculation'. But I wondered if it was just a way of describing things in a way that is familiar.
If you say that it really feels like a cock ejaculating, then I am unfamiliar with the sensation. Thank you for specifying.