But, like a lot of these films, this one has a parental guidance rating of "PG-13."

VOA: special.2011.06.20

They know a G film is harmless and a PG almost certainly is, and a PG-13 may or may not be.

WSJ: Roger Ebert on Movie Ratings

It's an open secret that some naturally PG movies have an element or two thrown in to earn a PG-13, so teenagers aren't scared off.

WSJ: Roger Ebert on Movie Ratings

Scenes of smoking have become increasingly rare in non-R-rated movies, according to the MPAA. Of the movies portraying smoking in recent years, 72% were rated R, 21% were rated PG-13, and 6% were rated PG.

CNN: Should smoking trigger an R rating?