Mine were in the 1960’s. My fraternal Grandmother must have had the kink, and really enjoyed giving enemas. As most of us know, in those days it could be considered proper medical treatment. She was always concerned with everyone's “BM’s.” “Have you had a BM today?” she’d ask. In my case, I hated school. I had a bad teacher in second grade, and I was also bored and didn’t know it. I would often fake a stomach ache, and if my Grandmother was there, she’d ask about my BM’s. Regardless of my answer, she’d always say “Well, go back to bed and we’ll check.” I went back to my bed, and she returned with a jar of Vaseline, and a rectal thermometer in a plastic case. She'd say “Roll over,” and then pulled my pajama bottoms down to my knees, and slid my pajama top up to the middle of my back. She took the top off of the Vaseline, then scooped out a generous amount on her skinny index finger. She then spread my bottom apart, and slowly massaged the Vaseline into my little butthole. She then pushed her finger all the way in, and made a very thorough check for “stool” for a minute or two. She’d slowly pull it out, and confidently say “I think you’re constipated” (Whether I was or not…) She wiped the Vaseline off of her fingers, took the thermometer out of its case, and shook it down. Again, two fingers spread my butt apart, and the thermometer was inserted into a very slippery butthole. Of course she held the thermometer between her fingers for the full three minutes. After the time had passed she pulled it out, wiped the Vaseline off, and checked the thermometer. “He doesn’t have any temperature” she’d say. ”Well, an enema wouldn't hurt.” Just hearing the word “enema” sent an excited shiver through me. (It still does…) Enemas from her were never uncomfortable. When she was at our house she only used a small fleet enema, (It was probably filled with warm water, since I never got cramps.) She disappeared into the bathroom while I laid on the bed on my stomach. I’d hear water running, and she’d return, holding the orange-tipped enema, and a towel. She took a pillow from the bed, and had me lift my hips up while she slid it under me, and pulled the towel across the top of the pillow. I settled my hips back down on the towel, as she took the cap off of the enema. Again my bottom was pulled apart, and the enema slid in easily with all the excess Vaseline. As soon as the nozzle had completely disappeared, she stopped holding my butt apart, and placed her hand in the small of my back. She held the enema in place for a moment, then slowly started to squeeze the warm water into me. It was never uncomfortable, since there wasn’t much water. She would use both hands to try and empty all of the water out, and then slowly pull the enema out of my clenched butt. She would then take several tissues, spread me apart again, and wipe as much Vaseline off as she could. I was then allowed to go to the bathroom to expel it by myself.
That’s how it all started. There are other stories to tell about the times I went to stay at her house for a few days, but that's for another time.
With that kind of home medical treatment as a kid, of course I have this kink.