I got dragged into watching most of a hentai video a couple weeks back and it left me with a few questions:
Tentacle rape? :eek:
The women in the videos have huge racks, teeny-tiny waists, and when they’re getting laid, they make noises that only dogs can hear. Why?
Most of the female characters are abused in one form or another, beaten up, humiliated, etc. Again, why?
And finally, the guys have HUGE equipment. Hung like bulls.
[gets the :eek: face out again for thoughts of #1]
It’s porn. That’s why.
Less cheekily, #2 and #4 are basically the same as in your standard American live-action porn, but brought to an extreme that is not physically possible. If women could possibly have breasts that big, they probably would. And apparently Japanese women in real porn make the same noises. Hell, some Japanese boys do. Cultural thing. It’s not like women in American porn make the same noises as real women, either. Personally, the only thing I can think when I see those women is “God, her back must be killing her.”
#1 came about because of Japanese censorship laws. Real or animated, you cannot show penis. You can use dildos, or you can use big tentacles. Tentacles are more interesting and easily enough done in an animated setting. A little trickier in real life though I am sure some people have tried! It has a long history too–Google “hokusai tentacles” :eek:
#3–I don’t know if you’ve noticed, but a lot of people get off on that kind of thing.
My theory on tentacle porn has been that, besides restrictions on showing penes, if you use a tentacle you can show the body of the naked woman, and not obscure her with the body of the guy.
This one I saw had a huuuuuuge penii attached to the alien dude. EEEEEK.
I actually just watched a documentary on sex in Japan a few nights ago, and here’s something interesting (and relevant).
The teeny tiny waists stem from a need for Japanese men - who are, generally, not the most physically imposing - to feel in control. That’s also why the girls are portrayed as very young. Evidently (and this is the show talking, not me) guys in Japan fantasize very heavily about being in control of their sex partners, and the easiest way to portray that is through small, young girls - with huge boobs for the purposes of porn - being overpowered by larger males (of human or tentacled species) and sometimes females*.
*Funtari is girls with penii, also very popular in hentai.
I apologize for my overabundance of parentheses and hyphens in the above statements. 
Ah. Interesting!
Just as a trivia point, in Japan it’s simply called “adult anime.” Hentai is actually a pretty strong word used to indicate really over-the-top perversion.
The guy who’s always checking women out is ecchi.
The guy with a huge porno collection who makes lewd remarks to everyone is sukebe.
The guy who humps animal carcasses while wearing a Nazi gas mask stuffed with his grandmother’s panties is hentai.