Focusing on nipple stim = hands-free cum

That may seem very basic…and in practice, yes, it is.
But I finally did it! Good for me, at least, but I know that's an actual nuisance for others. Two way street.

As it turns out, doing kegals stops me cumming. Again, this is obvious stuff, but it's surprising how that flew under my radar. That's largely because kegals in itself provide pleasure — but it also diverts it away from the penis, which is a bonus. So in regards to nipple stimulation, the pleasure is directed into the PC muscles as they contract almost involuntarily these days. More so, when pleasure builds up a lot when relaxing, the PC contracts hard as if slamming the safety breaks.

So hands-free cumming in effect meant keeping the PC muscles absolutely motionless whilst rubbing the nipples and building pleasure. This meant pleasure ultimately has to build up somewhere else, and surprise, it's the penis. This makes a lot of sense in hindsight with wet-dreams; when thinking sexual thoughts during sleep, the whole body is completely motionless. Even the muscles generally won't respond to prevent too much build up.

Bear in mind this sort of practice is not as easy or guaranteed as it sounds. It still requires a lot of focus to both keep the PC muscles relaxed, and to focus on nipple sensations enough that 'energy' within the penis builds. And, of course, it can sometimes be completely random if it works or not. (I've only done it twice so far)
This seemed to work for me, though, so maybe others had similar cases.