I had an amazing experience once when I arranged an appointment with a medical dom "Dr Hell" for a three day appointment at his "hospital" in Spain.
There were two options: the medical one where the full range of medical procedures would be carried out at the doctors discretion OR there was the other option which was designated the "punishment" option. This took place in a different room which was specifically equipped for the various punishments the sub would be subjected to. I could only choose a single option for the stay and was too afraid to choose the punishment one so I chose the Medical one. I was at the time around 50 years old, very fit and very randy. I had no idea what I was signing up for, but had a lot of faith in Dr Hell which I must admit in retrospect was totally justified .
On my arrival, I was told that I could choose to be looked after by a female or male nurse for the three days and I chose a female. She was pleasant looking and about 40 years old and would be the one to look after me while between any treatments that the Doctor subjected me to. For instance, on waking and before breakfast was served, I was subjected to a complete bed bath each morning. This took care of my preparation before the Doctor took over.
If I needed the toilet, I was given a full two quart enema, very soapy, to start the day and this was administered on my stomach with a hard pillow wedged under my hips. I was made to reach back and open my buttocks to expose my anus while she inserted an unusually large nozzle and hung the bag quite high. The water flowed rapidly and I was, on each occasion, cramping quite soon after the flow started. When I asked for the flow to be slowed, she politely replied that she only followed the Doctors orders and never the patient. These enemas were really uncomfortable but I noticed that, once cramping, there would be a sudden release of fluid as it was forced further into my bowels and the pain would recede for a while. The most embarrasing part was after I had held it and had my stomach massaged by her, I had to release it into a bed pan while she watched.
The Doctor was very interested in examining my penis first including including inserting various objects into my eurethra after forcing he lubrication in under great pressure and very suddenly causing a lot of pain. Mainly Sounds of increasing size.
When he got round to my bottom, I was placed on my back with my knees forced and held back to towards my very empty stomach. He always started with a manual inspection which, df my anus where the number of fingers was increased for each of the three days I was admitted.
He also favored a Rigid Rectoscope [ I think it was called], for his deeper probing and and rigid anoscope for the more shallow inspections of my anus as opposed to my rectum. I found these unbelievably exciting and , as I got harder and harder he would start on my penis again with larger and larger probes. It was an apsolutely amazing, although often very painful. I was also subjected to ice water enemas which I would have to hold for up to ah hour before release was allowed. I am not sure how large these were as water was added every now and again during the hour. Very exciting and sometimes frightening although by the end of the three days I had developed complete faith in him. An amazing Man but I have always wondered what would have happened had I selected the "punishment" option