I've learned a new concept today: Ruined Orgasm. I am aware of this but only in the vanilla context. I read a few posts on Orgasm Denial about this and I is another way of controlling someone's orgasm or part of orgasm denial.
According to Wikipedia:
This practice allows the physical release of sexual climax while denying or minimizing the satisfaction and pleasure associated with orgasm. Stimulation is provided to the moment orgasm is inevitable, and then stopped by breaking all physical contact with the genitals just as orgasm begins (i.e. past the "edge"). Non-erotic or nonsexual distractions may also be introduced at this point, which can include undesirable pain or unpleasant smells or discussion of prosaic, unrelated topics.
I think ass kisser and I practiced this, sort of. When we have sex, I would order him to stop before he comes. It was very hard for him to do this since he had to stop a lot. Since I don't cum through coitus, it would take hours before I let him cum. There were even times I would tell him to stop so we could go out to for shopping or do some errands together. I'm not sure if I ruined his orgasms at all but I did control them.
I may have done this to someone last year. He was not in good shape (he was sick) but we pushed on to meeting and playing a bit.... Hmmmm... I'll just keep the details to my self. Hahaha!