General Audiences: All ages admitted; contains nothing that would offend parents when viewed by their children.
PG
Parental Guidance Suggested: Parents urged to give “parental guidance” as it may contain some material not suitable for young children.
PG-13
Parents Strongly Cautioned: Parents should be cautious because some content may be inappropriate for children under the age of 13.
R
Restricted: The film contains some adult material. Parents/guardians are urged to learn more about it before taking children under the age of 17 with them.
NC-17
No one 17 and under admitted: Adult content. Children are not admitted.
Source: Motion Picture Association of America, “What Do the Ratings Mean?” accessed May 1, 2009, www.mpaa.org/FlmRat_Ratings.asp.