At 70, single switch male with no SO woman wife or GF to share with for now, I do my enemas solo for recreation and orgasm stimulus. My switch exes and I loved trading enemas with each other as D/s partners, most often with me as her sub, receiving a very large, very long extremely erotic but also as intensely embarrassing and humiliating enema as she could make it. For me, enemas have been wonderful and erotic for >55 years by themselves, but the more mixed-fetish (rubber suits, hoods, gloves, sneakers, bondage, D/s) and humiliating my partner could make them the better they were and are. I always use a latex DBC and many positions are useful, effective, fun and erotic, depending on the stage, rate, size, duration and giver of my enema.
As mentioned, I’m often or usually in a wetsuit or latex suit and thick rubber sneakers and restrained while getting and holding an enema, so almost any position feels wonderfully helpless, submissive and humiliating as she enjoys controlling my fetish and enema fate. However, on a bit more reflection, though I don’t use it much, I suspect the most helpless and easily-filled position especially dressed in my usual fetish clothes, is knee-chest with my arms cuffed or tied to my sides and butt in the air. I’d have no ability to change my position or resist the insertion, inflation, and filling with the enema running almost freely into me without stopping essentially straight downhill from nozzle to sigmoid to descending to transverse colon. And then showing right away as a nicely growing downward belly bulge helped by gravity, adding to my pressure, distention, and delightful helpless humiliation. I’m getting an erection and strong desire to do this enema just writing about it here. Wonderful. I think it’s definitely coming soon.
Eric