LOL. Some men say that to be a smart ass or, because they really want the Mistress to do harder. It can be a challenge when a man wants to be pushed or, forced to do something he really wants to do. If I got that reaction in a session, most of the time, I'd probably say, "Yes, I know. It is why I tied you up first." This, not to cross anyone's lines but, most of the time, "Ouch, that hurts," really means, "Put me in my place."