Okay so, this request is balancing on a knifes edge between being nsfw and being sfw.

There's a lecture (I believe on youtube), about sexual triggers in men and pornography, from what I remember it's quite light hearted and it goes into detail about sexual triggers in men (and maybe women), heterosexual men are the ones watching trans/futa porn, while homosexual men have no interest in it for example.

Does anyone know the lecture I'm talking about?