it is an interesting fantasy, but as you lay bleeding and broken in your own waste, hungry and neglected and cold... as you lay there in the dark shivering, you will begin to realize no matter what situation you're in now, it's not so bad.
if you are just unappreciated, then tell your spouse and get things going or split.
kidnap and r**e fantasies are frequent, but inhumane treatment fantasies are not as prevalent and may show a deep need in real life that is getting ignored.
to the first person who answer you, what the Fuck. its her thing OK not your. hello to the lady who has this request, what state are you in, would love to help you out.
#2 I thing #1 is right. I had aroomie in college that had "that type of fantasy". She told a guy she knew about it and he made it happen for her. This is 6 years later and she still sees a therapist weekly to get over the issues. It was not a neat and tidy gang bang type of thing, she spent 5 days in the hospital from being brutalized during the gang r**e. When she started to realize it was real and not a fantasy it was too late, they just beat her into submission. The guys should have gone to prison, but she would not press charges, her lawyer said the case would be more painful than the r**e or beating because she literally asked for it.
Check out much older men, or couples. They will probably do everything you want done, but not damage you physically! I would tie you up and masturbate you to the point of near-insanity, as you could do or say nothing to influence what was happening, but would just have to come and come until you KNEW you couldn't again, but found to your amazement you could! I would keep you comfortably helpless, for as long as it appealed to you, maybe a little longer, just for the "scary-good" effect. Be careful. Go for educated, forget looks, ignorant is often brutal, no finesse, just pain without pleasure.