I agree that explaining why wrong is wrong is complicated (though, the metaethics sequence, particularly this and this, do a good job).

I'm interested in what people mean when they say "objectification".

So like, what's objectifying, why is it objectifying, etc. Stuff that makes it more obvious to a heterosexual male (who, to his knowledge either hasn't been or doesn't mind being objectified) what people are talking about when they say "objectification". In a way that just fleshes it out some more.