I'm just wondering, is this even SUPPOSED to be a horror movie? I haven't seen it yet, but it mostly just sounds like a stupid movie you can jerk off to. Can't believe, Alexandre Aja, the director of highly underrated "Mirrors", have put together... THIS!?
It's supposed to be a schlocky b-horror/comedy, and it succeeds. It is quite stupid, with a lot of nudity, but plenty of gore too. It's not a scary horror at all, it is all played for laughs.
Go into it expecting fun, and you will be fine. Go into it expecting a good movie, or even a good horror and you will be disappointed. But the main thing is it achieves what it set out to do. It never tried to be a movie it wasn't.