You know, I love the massages I get from ******a, but my ribs now hurt.  She sits on me from time to time during our sessions, and I noticed last/Sunday night that she was both sitting higher on my torso and pressing down where my ribs end.  That must be why I'm hurting.

No, I'm not going to make her stop.  I might ask her to shift her body.  But if she wants to sit on me, hell, she can sit on me.