In our humble opinion, sexy movies should be their own genre, just like dramas, comedies, and thrillers. Of course, when a movie gets an NC-17 rating, it’s usually a pretty good indication that some raunchy stuff is going down. And when we say sexy movies, we’re not just talking about movies with tons of eye candy or sweet and tender rom-coms. No, we’re talking about down-and-dirty flicks that you would be mortified to watch with your parents — that might even make you blush when you…