I posted some of this before, but it's appropriate here:
The first time I was given an enema with a Fountain Syringe I was about 11years old and was badly constipated. I don't think I'd gone in 5 to 7 days and neither a laxative nor an 8oz adult bulb of warm water earlier in the day had done anything to make me poo.
I think my mom called my doctor and she ordered a bag enema and a visiting nurse came to give it to me.
At the time I had no idea what was about to happen. The nurse was a complete stranger and I thought she was a new maid in a dark blue uniform. She came in and briefly examined me, took my temperature a rectal thermometer, and left.
A few minutes later, my mom and a neighbor couple came in. They removed to covers from my bed and pulled the foot out from the wall, so it was accessible on three sides. Then I was rolled on my side, a thick pad of newspapers was placed on the bed, and I was rolled onto the pad on my tummy. My pajama bottoms were then removed completely.
Then, without warning, the man pinned my shoulders to the bed and each of the women took hold of an ankle and my legs were spread wide.
The nurse then came into my bedroom carrying something that looked like a hot water bottle. I later learned it was a filled red Rexall Roxbury fountain syringe. I was pinned on my tummy on the bed and could not see well and was completely clueless of what was happening. I'd never even seen an enema bag before.
The nurse came to the bedside and I saw her open the clip and jet some water onto the pad to purge the tube, and felt the nozzle enter me. She then opened the clamp and held the bag a foot or two above me. I felt nothing. After a few minutes, I saw her over my shoulder, squeezing the bag, to see how much water was left, I think. I may have felt some fullness but don't remember it.
After a while more, she closed the clip and removed the nozzle. I still had no clue about what had just happened. Soon, I felt a very strong urge to poo and pleaded to get up. Someone asked “why ?” and I replied I had to go to the bathroom very urgently and was let go. I ran to the toilet and sat down and was amazed when whitish water started to pour out, uncontrollably. The soap I guess. Soon, the water was interspersed by poo. The visiting nurse came in and sat on the tub rim right next to the toilet as I pood, likely to be sure the enema was working well. After a while she opened a bottle of liquid laxative and gave me a big spoonful as I sat "to keep me going", and then left. I sat on the toilet for about a half hour while the enema continued to work.
I'm sure the episode described above was in no way abuse. Their sole purpose was to make a badly constipated kid poo and they organized it in such a way that I'd get the entire enema without possible resistance and it would be retained long enough to completely empty me out.