“Based on the knowledge available to me, within my own perspective and frame, I am quite confident that I understand you perfectly and that you don’t understand me at all.  I get to explain what is going on with you, but you don’t get to explain what is going on with me, because you have no clue.”

…strictly speaking, this kind of argument doesn’t have to be 100% bullshit.  Information asymmetries do exist. 

But it is almost certain to be 100% bullshit.  The much likelier case is that you know just as little about me as I know about you, that your ideas are founded in stereotype and speculation just as much as mine are. 

If someone is trying to push this kind of claim on you, he had better be prepared to display an extraordinary wealth of quality information, of a kind that has no parallel in the sphere of your own knowledge.

Otherwise you’re just getting bullied, or played, and you should react accordingly.