An interesting read about sexual fantasies is My Secret Garden. Its about women's sexual fantasies, I read it nonetheless and even for a book written in the seventies it can still be a bit shocking. It also has multiple sequels.
I've seen an interview with the Author and think she is one cool lady.
Anyway, some of mine; Biggest one would be being forcibly made to perform oral (and rim) on multiple women with a sun dresses on and lingerie. Hair pulling, smothering, throw in a little strangulation (of me), you know... the good stuff.
Second this is would be to bathe a women, dry her off, massage her, do oral on her then have sex. Relatedly I would love to find an SP that would do slippery sex after we massage each other. Preggo sex is another and what I would call conception sex, where it is simulated trying to conceive. It would be fun to be able to operate one of those Sybian thing-a-ma-jiggers with a remote and just sit back and watch the show, while being in control. Tall women is another fantasy, but at 6'2 they have to have a pair of big heels. An over nighter with a complete stranger, though being attached this one would be tough to do. And last for now; a fantasy involving counselling some women (escort) and manipulating them into sex, this one would be the riskiest to me to do, kind of inclined not to do it on account of what it could do to the other person, it would have to be done very well and I am not absolutely sure I am up to that task. Lots of fantasies should remain just that, fantasies.
Oh wait I have one more. I fantasized a lot about having sex with escorts. As much as I would like to see SP's have all the rights, benefits, securities and happiness that goes with a 'normalized' job, there is a certain eroticism that goes with the societal 'wrongness' of seeing an escort. And having sex with someone who fucks a lot of people. I love sluts (which I mean in a very good way).