In my opinion, it should simply just be tagged for posts that involve the viewer directly (i.e. post #3908196, which has a character humping "your pillows" and sniffing "your underwear").
The fact that it's invalid means it's not tagged, which means I can't blacklist it. And, as someone who is fiercely aegosexual to the point where anything involving myself is an immediate turn-off, that's a bit of a problem.