I had these sleep paralysis orgasms when I was on antidepressants and sleeping pills. My sleep paralysis “demon” was a faceless long haired man who’d press himself against me and fuck me through a huge sheet of cling film and I’d come just from my brain simulating how his cock would feel like inside me. It turns out at night I’d pull my blanket over my face which would make breathing slightly harder, I can only imagine the cling film was some kind of visualisation of being trapped under something.
Sure I came most nights but it was so fucked up I’d rather be awake/in control of my body for my orgasms.