normally 6times in 6 hours is too much. i am sure your thing will come out blood if you over do it. Every thing has its limit. for me 2 times or at most 3 times in an hour will be good enough. As long as mistress will make me hard and to make me cum good, even one time also worth it.

. for sub, only one thing is his mind is he is to serve mistress not mistress to serve him. But for me I am not actually in so much sub type. Just to have role play to be sub.