Yikes... what? That pornography exists? I guess that does merit a "yikes" in some capacity but it's well known enough that it's not exactly new information.
I'm wondering if perhaps you are misunderstanding what I was saying. The poster I responded to asked if it was true that hentai came from anime, or whether it was the other way around, and I pointed out it was the other way around; that is, that hentai came from anime.
To clarify the definitions of these terms: In English, the term "anime"--taken from Japanese--means Japanese animation. So if it's a cartoon and it's from Japan, it's an anime, though sometimes the term is also used to refer to animation from outside of Japan that is influenced by Japanese animation. Hentai is another English word taken from Japanese that, in English, is primarily used to refer to pornographic anime, though it can also be used to refer to explicit comics or video games of Japanese origin. The terms anime and hentai have somewhat different connotations originally in the Japanese language, but that's what they mean in English.
With that in mind, it's obvious that hentai came
from anime, because it's impossible to have pornography in any medium before the medium itself. For example, magazines didn't come from Playboy, rather Playboy came from magazines; first you had magazines, then someone decided to use the medium for explicit material like Playboy. That's the same way it is with anime.