I've never asked him to stop doing anything to me before.
[Well, that's not entirely true. The first time he used a closthespin on my clit- it starts out tantalizing, then builds to arousing, then annoying, then painful --> all good; then it abruptly shoots off into a level and kind of pain that scares the hell out of me. I think I am, reasonably or not, afraid of nerve damage. What a horrible place to have nerve damage? So, that time I panicked.]
The point is though, that whatever else he has done, I've not asked him to stop. I've yelped, moaned, cried, sobbed, screamed, and tried to move away, even fought to move away. But on some level, I have been afraid that if I asked him to, he would stop.
But it slipped out this time - please stop.
He didn't stop of course, and I'm sure he wouldn't have any other time. It was something in my head. So he carried on and I got a little lost after that.