No, I meant in the rules, your pleasure builds up until you orgasm, then drops down until it builds up again.  My initial idea is that it takes a few rounds of raping for each orgasm, but if I have penalties based on your current pleasure, it would mean those penalties go away as soon as you orgasm, which wouldn't make as much sense.  Although now that I think about it, perhaps it would be better if pleasure keeps building - it would mean being held for an extended period of time would be a very bad idea.  (I could also have characters take more ahegao damage if they fail the will save by a lot... hm, need to do numbery stuff.)