My comment at the end of the thread started by a woman talking about her fantasy of basically a gangbang spurred this thread. I added that I've never been interested in the idea of that, but am very aroused by the idea of the reverse fantasy of being used repeatedly by a series of women in 1s, 2s, 3s, whatever. My fantasy definitely has a strong BDSM flavor. However, it is not one I would pursue in real life to this extreme. That is true of extreme BDSM in general, asphyxiation games, and many other things. Interesting, but not something I would do.
What fantasies do YOU enjoy, but would not try to do in real life, or at least doubt that you would.
Most of my fantasies I would seriously consider acting out I have done.
One I haven't done, which I would definitely try if the formidable logistical and physical coordination issues could be overcome is clearly a cousin of the gangbang scenario but a softer, gentler, GFE gangbang <G>. That one is for there to be 5 women, so that at all times one of them is kissing me with either her upper or lower lips or starfish, 1 each on my 2 nipples (as mine are big for a guy, always erect, and I adore attention to them), one riding me or taking me orally, and one using a strap-on or mouth on my bottom. Interaction between my partners also strongly encouraged as long as all 5 are actively pleasuring me.
Hopefully y'all have some typically out there things to share!!