Unlike my fictional stories, all of this actually happened, and I've tried to tell it to the best of my recollection and keep any embellishment to a minimum. Names are eliminated in the interest of privacy, and pictures never existed.
So this past weekend I found myself priviliged to attend a small medical fetish convention in a nearby city, called an E-Fest. The "E" stands for enema, and that was the focus of the gathering. The organizer, "M", is a professional medical fetish nurse/dominatrix, and she and several other nurses, all female, were in attendance, plus a dozen or so enthusiasts, nearly all male. This was the first time I'd ever been to something like this, but it's something I'd wanted to explore for a while. On Friday afternoon there was a meet and greet session in M's suite, where we sat and talked for a while. Once the other nurses arrived, one of them, "D", announced that she was training one of the other kink nurses, "E", and the two of them would be providing a personal enema demonstration, if any of us cared to watch.
Myself and two others decided we were in, so we went down a couple of floors to D's room. D was tall and thin, black with a milk-chocolate complexion unadorned with any tattoos or piercings, and absolutely stunning. She looked to be in her early 20s, had slightly wavy black hair that flowed down to just below her shoulders, and she wore glasses, the geek-chic variety with small lenses. E was white with brown hair a bit longer than D's, chubby but not huge, shorter than D, and I learned later, not quite 21 yet.
We three guys took seats in the chairs and on the couch, while E filled up the bag and spread an absorbent pad on the floor (just in case, as a courtesy to any hotel cleaning staff). It turned out D was getting a wine enema, which is like a regular water or saline enema except with wine added to the solution. The hotel room wasn't really designed to accomodate this kind of guest behavior, and D had flown in from another city and you can't exactly bring an IV stand on an airplane, so they had to make do with hanging the bag from one of the nightstand lamps, which wasn't really high enough, so there ended up being a bit of difficulty in getting the liquid to flow down normally, but they managed.
While E was busy setting up, D walked around the suite getting undressed and giving details about how the enema process works for any noobs (me), the equipment involved, correcting E whenever she did something not quite right, since she was still learning. I found out that E had only previously given enemas to her mother (also a kink nurse) whereas D was a career professional and obviously knew her stuff. She was also a complete exhibitionist and showed no shame or embarrassment about what she was doing or how many people were watching her. Soon she was down to just a black lace bra and a pair of blue bikini-cut panties. She jokingly apologized for her mismatched undies (I didn't mind

), then stepped over to the pad and slipped them down, but she kept her bra on the entire time. Underneath she had a perfectly shaped ass, rounded just right, and a completely shaved pussy. Holy shit was she gorgeous.
D knelt down on the pad, with her elbows on the floor and her ass in the air, to allow gravity to do its work with the wine solution. Before starting the actual enema, she had E insert a device called a "flatulator", which is used to empty the colon of any gas, so the liquid wouldn't get forced out and make a mess if she happened to pass any gas. After instructing E on the proper technique for putting on gloves (1 pair, plus a second glove on her dominant hand), D had E lube up the plastic tube and insert it into her (D's) ass. E then removed the extra glove which had become contaminated during the insertion by pulling it off from the wrist first, inside-out, so any lubricant or material would end up on the inside of the used glove, and she still kept the second glove on underneath. Open the water valve for 4 seconds, then close it for 6. Repeat.
When the urge to expel became overwhelming, which it did several times throughout the process (I forget exactly how much liquid she took in, but it was quite a lot), D would stand and hurry into the bathroom. The rest of us stayed where we were when she did this, but she left the door open and clearly harbored no shame about going with all of us right outside. I'm sure she wouldn't have minded if any of us had decided to watch, but I just felt it would be impolite. She apologized in advance for any possible smell, but the bathroom was around a corner from where we were sitting, so I didn't even notice any of that, though I did hear plenty of liquid splashing as she went. Even one time when I could tell from the sound of things that she hadn't quite made it to the toilet in time, she was unfazed, and calmly and professionally cleaned up her own mess.
I learned a great deal about the enema fetish, and the different variations on the basic procedure. D kept up a constant dialogue with us throughout the entire process, which took a good couple of hours, telling us stories about places she'd travelled, amusing anecdotes of the TSA publicly going through her collection of fetish wear in full view of other passengers, and how she'd once convinced them that her punishment whip was actually a belt and not a "weapon" by tying it around her waist like one. D was a bit of a neat freak, and stressed the importance of always cleaning and never sharing equipment. She showed us several different positions for receiving the enema, including on her knees and elbows with her ass up, on her side, and on her back with her legs bent and slightly spread. Her head was pointed toward us the entire time and her ass away, so we did not witness the actual penetration.
The entire demonstration was very erotic, but one thing in particular that stood out for me, as an ENF enthusiast, was that occasionally when D stood up to get something to show us or when she was coming back from the bathroom, she'd have one or both hands over her pussy, not physically covering it, but sort of hovering over it as if to block it from view. It appeared to be instinctive, as though she was not even aware she was doing it, but the way it contrasted with her self-described exhibitionist nature made it a huge turn-on for me. Toward the end D started getting a little buzzed from the wine (using it in an enema solution means that it gets absorbed into the body much faster than if imbibed orally), so maybe that had something to do with it. In any case, I was in love (okay, schoolboy infatuation) and I knew I HAD to have D do this to me...
(Part 2 coming this weekend!)