I did it. No pleasure at all and I was furious that she drove me to that point (I was about to break up with her because of that). It was a slap, not a fist powder hit. There is no reason to use that much power and brutality, it's more like a wake the fuck up and stop screaming at me, hitting me and behaving like a lunatic (yeah, I received a lot of slaps and names that evening). BTW, I haven't used all my power, not a one fifth either. It was cold and precisely calculated awaking slap. Not to soft but just with enough energy.
Right away she returned to her consciousness. I will never forget her eyes... She just couldn't believe what have just happened. She started crying but I got her in my arms and said I'm sorry etc. and all was good after that. Of course, I did apologize and told her that I will not do it again... If she will never again act like a freak.
Then good sex fixed all that bad feelings and emotions.