I think I have two. Maybe three. I say two at least because it has to do with two opposite sides of a similar concept.
Let's call this first one, "Fantasy A". Goes like this:
Firstly, I would want this to be a more fictional type of universe, not exactly reality per se, but I would like to be in it. Because it's one of those "what if" scenarios that only really works in some kind of "anime-like" fantasy world, virtual situation things, where there is no consequence or anything like that.
So, everything has a very appealing anime look to everything, because to be honest, that appeals to me more than real life and real people do, generally speaking. Both Fantasy A and Fantasy B work in this "alternate world" premise.
So, having established that, this would be a world ideally populated mostly or entirely by girls, although of course, feminine seeming guys are welcome and stuff. Like, I think you get the idea. Anyway, everyone has become a mindless zombie-like dummy that all just wander and stumble around, brainlessly. Though mostly mindless, they possess little or no will of their own and are susceptible to suggestion or doing whatever I tell them, insomuch as they are capable of understanding it. Which might be difficult for some of them depending on how capable their low intelligence is of grasping the ideas I say.
They either (attempt to) strip their clothes down if I ask them, or are helpless or totally oblivious to being pantsed or stripped (generally no longer able to understand the idea of clothes anyway, among other things). With the idea being basically being able to get as many girls walking around in various states of undress as I want. Basically what i'm saying is that I'm kind of a huge pervert, so a situation like this is one of the best things I can imagine.
If this was just what everything was like now from now on, with no explanation or anything that could be done about it, the morality of this kinda goes out the window, generally speaking, being an alternate, not-serious reality, anyway. If this was virtual but I was simply displaced into this "fake" reality, that makes it even better.
It's hard to say if or how long it would take for me to get tired of such a thing, but of course, i'd take advantage of this situation while it lasted for all knew, especially with the AU, virtuality, or whatever else this might be, being a factor. This would be like what a little slice of heaven would be like for me, as far as I can tell.
Similarly, if I was just in some virtual anime-world where I had unlimited hypnosis powers, something similar would be fine, too.
However...
Fantasy B is a bit of a different angle. In Fantasy B, I would like this to be a thing, but I want to take part, myself.
I would like to still possess some awareness, (so that I could enjoy this), but it would be great, if I APPEARED mindless on the outside, but possesed internal thought, and my body was just walking around on it's own like a mindless zombie.
I would like to be stripped down to my underwear, or even better, wearing women's underwear, have no outward control over myself, and be walking around among other cute, zombie-like anime girls who were also in their underwear. I'd like them to mindlessly bump into me, touch me, hug me, hump me, or whatever else while they have no real idea what they're doing, while my my body is also doing the same... namely, bumping into them, hugging them, touching them or humping their mindless zombie-walking panty-clad bodies. All of us just wandering around, doing this, moaning and groaning and making assorted mindless zombie sounds together.
Although a possible "Fantasy C" where a bunch of fully-aware and turned on girls just keep me around as a mindless, zombie-walking boytoy while they strip me down, pull my underwear down, touch me, play with me and masturbate me while I stumble around in a stupid, moaning, daze for them, can also be considered a pretty fantastic fate as well, that I would like to experience.
Granted, somewhere along the line, i'm at least SEMI aware enough to enjoy it or remember it later. (Though actually if guys wanted to do this to me as well, i'd probably be fine with it, too. I'm not that picky. I mean, I have my preferences, but I can always go either way on this as long as it just feels good.)
Anyway, all of these are pretty nice. I'd take any of these.