This seems like the right crowd for the old Lenny Bruce line about how "the only thing i ever did that i think was perverted was jerking off my dog."
I have had a few me and two women things (and still regret the time i turned one down like a fool), but never an orgy per se.
I also can say i have been thrown out of an S&M club for having sex. My late friend Marcus was a bouncer at the very notorious Hellfire Club for a few years. There was all sorts of S&M activity, but strict anti-AIDS rules against oral, anal or genital sex.
I met this woman, and we were doing this and that out in the play rooms, and got really horny. So we went in the ladies room and fucked in a stall, and then were kind of gearing up for round two, with her standing on the toilet seat, and me fist-fucking her. I guess we were kind of over-enthusiastic and loud, and the owner's two daughters came in to piss and got pissed at us, and went and got the bouncers to toss us out.
The head bouncer was this bodybuilder moron named Lucifer, who was the President of this otherwise all-Hispanic Japanese-bike biker club (with colors, etc, forget what they were called) that had a house around the corner from where i lived in Williamsburg. He and i did not get along at all. He was all excited at the chance to try and stomp me, but my boy Marcus told him you can't fuck with my man. i was sent on my way, and the woman vanished into the night.
I didn't promise it would be an exciting story. I will try to remember other sordid adventures, but i was drunk and high as shit on drugs during most of them, so recall is dim, probably thankfully.