I have done fb sessions with some Ladies. It has not been two dozen Dommes. It has not been one dozen, but close. With a few Ladies, I have had more than a few sessions. There are lots of potentially more extreme things for a Domme to do. and which I have never done.

Among the many tricks I have not learned is the trick of serving a Mistress who is into severe corporal punishments and having Her combine that with fb. I may never do that.