A movie automatically earns an R rating for dropping two F-bombs. So what do you rate a movie that whips out the worst of the four-letter words 300, 400 or even 800 times? That’s a question for the directors of “Fuck: A Documentary of the Word,” “Nil By Mouth,” and other films that crack the “top 12 dirtiest mouths” list. This infographic plots them out.
