I must admit I love having her nipples sore for me as a reminder of her submission to me and how she likes to serve me and make me happy.
I don't know if many of our bloggers have their nipples pinned or clamped but I thought I would share that it makes me feel very much in control of her. And she seems to enjoy it when she obeys and submits to my control. She likes to SSO -- serve, submit and obey.
FD
