One that I would like to try (it is a two session double)....

I meet up with a more aggressive and a more submissive set of women. The premise is that I am not aggressive enough and want to be taught how to manhandle a lady. There is no humiliation or degradation just learning. On the first visit the more aggressive woman shows me the ropes of fucking, not making love. The right spank, where and when to control, how and when to use butt play for control and things like that. The submissive is the target. This hour or 90 minute session has me leaving with utter confidence on my manly-hood!

The second session is supposed to be the same but with my new confidence I make the aggressive the target. I walk into the room immediately push the aggressive up against the wall and make her submit to my desires. Once the more submissive sees this she joins in helping to control the aggressive and be sure the two of us are fully satisfied.

This I would find to be very educational but allow very erotic.