R-rated films are movies that have received a rating of "R" from the Motion Picture Association (MPA). This rating indicates that the film contains material that may be inappropriate for viewers under 17 years old. Common reasons for an R rating include strong language, graphic violence, sexual content, or drug use. To watch an R-rated film, individuals under 17 typically need to be accompanied by a parent or guardian. The rating serves as a guideline to help audiences make informed choices about the content they consume, ensuring that viewers are aware of potentially sensitive themes.