>>2985487Specular Highlights is a photography/3D modeling term that refers to the kind of shiny skin effect you see on a lot of gens, and is on particularly intense display in the gen that anon shared. I think that anon is trying to be funny by mocking people who complain about it in gens, since it's one of the more common complaints aimed towards most AI art looking samey.
>>2985505This is the sort of thing you see in a slaaneshi brothel.
