Thing is, you get sadism for hitting prisoners, so unless youre doing something funky that nobody knows about, pleasure will constantly rise. Whats more, after a while masochism will join it, and you will be gaining pleasure from both smacking and getting smacked.
Pacifying two levels worth of rioters leaves me at ~30-40 fatigue and about 60-80 pleasure. I need to think really carefully each time a fight is about to end in this situation - need to leave a maximum of 2 enemies to beat or i will carry that high pleasure onto another fight in a wave fight. Getting 6 fresh guys against you just as youre about to collapse from orgasm isnt healthy for a virgin run.
The battle thing is more of a "interesting but not really useful information", I noticed that by accident, while doing a slut run from the very beginning, so I was getting pleasure from them touching me, before I got any levels in sadism or masochism.
Fatigue acts weird, sometimes it's not a problem, sometimes I gain a lot of it.
I've noticed that I gain more fatigue if I, fight strong enemies, use a lot of stamina, level up stats?
But I may be wrong on all of that.
This may not be so helpful for pleasure management as it requires a lot of things, but sometimes it's better to just stay down and let the last few enemies jerk themselves off, rather than gain pleasure from hitting and getting hit.