I am with the women!!!
When my sexual excitation reaches a certain level, my entire body seems to be reacting in concert with the burgeoning tumescence, though more of it is below my chest, into my pelvic region, with my legs involved too. My heart rate and breathing do increase dramatically. And, then, there is this ultimate explosion of sorts, and I typically, gently float back down to earth, and often ease into a gentle slumber, or lovingly cuddle up with my partner. You know ~ tender touchings, sensual kisses, and all that ~
Now, I cannot say that I have ever had an orgasm during an enema, though I would have to think that I have in times past. Well, let me say that it has not happened in recent times. I'm not necessarly seeking sexual incitement when surrendering to an enema; it's more like a relaxing, soothing, therapeutic treatment, that ultimately enables me to remove a lot of 'stuff' both physically, and mentally ~ leaving me in a state of relaxation & splendor, if not rejuvenation.
I experience an enema as a holistically healthy experience.