I’ve never had a proper orgasm through sleep (it’s usually a deeply unsatisfying ache of incompletion) but I do experience a different kind of orgasm with no touch at all. It happens when I read a certain kind of fanfiction that focuses on love through sex, it happens when I listen to audio porn, it happens when my fiance talks dirty to me. Without touching any part of my body, my womb pulsates of its own accord. I can do it up to every 30 seconds sometimes, if I’m properly aroused. It’s a very different feeling from a clitoral orgasm though.