Saggy or not, the boobs of mature woman may perfectly be flogged with nice nine-o'-cat slashes... as well as the nice growing advantages of young girls! the beating must always be done in standing position where the nipples bounce and even spin round in every direction. It's amazing and healthy for the girl or lady. I am very proud to say that was the case of my lovely 3rd wife whose nipples were never spared and often RUBBED with stinging NETTLES until they became as RED as her buttocks after a full spanking.