Here's another one I thought of:

This is how BDSM-D/s is practiced.

If your contact is telling you that you're doing BDSM or d/s wrong then seriously question him about it. There is no right way to do any of this. It's for your pleasure and fun, not some class to be passed. Many of these trolls will try to undermine your self-esteem by telling you that you don't know anything or that you're untrained in BDSM. And they'll usually say that just before or after telling you to do something you don't wanna do. You may not know anything and you may never have been trained before, but remember this: You cannot be universally trained for BDSM. Yes there are similarities in d/s relationships, but no two dominants are the same so no two training "programs" -for lack of a better word - are the same. My wife responds to my facial expression with accuracy at this point, but if she went to another dominant she would have to learn his mannerisms and his likes before she could be considered "trained". So if your guy is telling you that you aren't trained tell him, "Well yeah, I thought it was your job to do that."