to my way of thinking if we're talking about a more permenant thing then no human being no matter how much they think and feel they want to go to the etreme in the long run would be able to mentally deal with it, to do that you'd have to 'break' a person and i personally only have one name for that...abuse.
so for what my opinions worth, outside of play i dont see how it can be as asked in the op integrated into a r/ship a part of the dynamic, i dont believe there is such a thing other than for those extremely unfortunate enough to have being such as long term hostages,holed up in extermination camps, or who have suffered real torture and the like and even then its taken years and much suffering to get to that.