system
A chat on subreddit /r/NoStupidQuestions
human
The men's wives were also involved. It wasn't gangbangs, it was literally orgies and wifeswap stuff. "A bunch of people banged each other" is more correct.
gpt
Again this is the first I've heard of it so I won't pretend I'm well informed on the subject, but the only source I saw so far said that the woman involved was proposing that kind of stuff to her husband, but that he wasn't interested. It made no mention of any such details for the actual participants. If there is a source saying there was other "sharing" besides the one woman involved I'd like to see it.