Flutterby™! :

From Salon, an interview with Coming Soon director Colette Berson on how a movie with no nudity can get an NC-17 rating by suggesting that women can find sex pleasurable. Well, it's a little deeper than that. Referring to the Adam Sandler "Big Daddy" publicity posters:

I thought, can you ever see the publicity for a movie of two women squatting? Nobody would think that was funny. They would think it was gross and weird. In my movie, the double standard is that girls are actively seeking out an orgasm and empowering themselves by it.

And:

Almost any time a girl orgasmed, the board wanted me to cut the scene by 75 percent, even though she was 18. I was told specifically that the board has a problem with young girls' orgasms.

Well shoot, no wonder nobody's making porn in which women are enjoying themselves, all the porn consumers are raised on MPAA approved tripe. The interview is well worth the read.