There is no law against this. You should start looking inward, and realize randomly accosting people also makes you an asshole. You seem to care about that, just a heads up. You don't get a free pass to be mean to people just because you don't like them or they were mean first.If I'm in a porn game just for "the gallery", I'd be a complete ASSHOLE.
Also the nature of this very forum sort of puts most people in a morally grey area anyway.