Speaking of nudity and ratings, check out this bit of hyperbole from a recent Newsweek story on The Simpsons Movie:
To make it on the big screen, you have to give people something spectacular. Something extraordinary. Something like Bart Simpson—full frontal. It happens early in “The Simpsons Movie,” when the animated 10-year-old takes a dare from his goofball father, Homer, to skateboard naked through the streets of Springfield. Hidden by plants and picket fences, he whizzes along, past kids, down hills, through traffic lights, until, in one shocking moment, little Bart flashes his little part to the entire world. Which may make this the first Hollywood film to show that kind of skin and to escape an R rating.
… and at the age of 12, after he has learned how to use a knife:
The rating on this film? PG. Though admittedly, it came out before the PG-13 was invented. But either way, it wasn’t rated R.