I'm a young 73yo GWM who has been into enemas as long as I can remember. There's a good chance that some of the older gay members, are familiar with the Fraternity of Enema Buddies, (FEB), which was a pre-computer networking capability created by a great guy by the name of Frank E Ball (also FEB). When I first met Frank in the early 80's he was in Chicago.
2, 3 or 4 times a year Frank would distribute a 9x12 envelope to all the members that contained an updated roster and erotic enema related stories. Members paid a modest annual fee and Frank was a gentle soul who loved every aspect of enemas. It was obviously a labor of love because can you imagine manually collating 100-200 sets of 50 +/- pages of paper, addressing and stuffing the required large envelope and affixing postage stamps (it was lickem and stickem back then, no label-style stamps). Members filled out an application/interest form when joining. It listed a wide range of medical fetish, enema and ass fetish items and space to indicate "no interest", interested in giving, receiving, etc. IN addition to the FEB activities, Frank published a similar roster/stories for T.A.I.L., aka Total Ass Involvement League, which was primarily for guys into fisting and other types of ass play.
All of this is to say, one of the FEB members had an annual event at his lake front home in upstate NY and at that event there was about 20 guys there for a weekend of enemas and other fun things. The host had a magnificent basement that was equipped with several slings, a birthing chair, several massage tables and 2 or 3 toilets sitting where all could see and multiple cabinets to hold all sorts of ass toys. The host was a healthcare professional and was very well organized in terms of safe-sex, toy sterilization, cross-contamination, etc. . Needless to say, it was a wonderful event with many of the guys switching off on giving, receiving and various other hedonistic activities. It was much fun. I still vividly remember the fun of 5 or 6 of us, with our full bags held high and nozzle inserted, as we walked into the lake till about chest deep in water, feeling the wonder of the water slowly rising to its own level inside our respective butts and guts. Much fun!
IN addition, when traveling on business I"d always check the roster to see if there were any guys in my destination area to help occupy me during those lonely motel room nights. If in doubt, I'd give Frank a call and he'd provide confidential feedback about the guys in that particular town. Just think, the very first enema matchmaker! During that era I was fortunate to have a number of consulting clients so I was able to be the lucky recipient of multiple enemas by Frank.