8 XXX : Femdom

I was listening to the CBT/Ballbusting podcast from "In Bed With Dr. Sue" (I think that was the name) the other day and was really struck by how universal women's enjoyment of hurting balls is, and yet how rare it is to find a woman who wants to incorporate that into Femdom play. I wonder if anyone has any thoughts on why this might be.
[Imgur mirror](http://i.imgur.com/jO9lyXZ.gifv)