So... what's the difference between R and NC-17? Well, R is breasts, behind, and pubic hair. And NC-17 is showing the penis. And penetration. You can have nipple sucking and her arching back, but show the motion and you've deemed it NC-17.
Also why do movies with homosexuals in them get higher ratings? It's not fair.
Also why do movies with homosexuals in them get higher ratings? It's not fair.