Premise: Vixen! is a 1968 satiric softcore sexploitation film directed by American motion picture director Russ Meyer. It was the first film to be given an X rating for its sex scenes, and was a breakthrough success for Meyer. The film was developed from a script by Meyer and Anthony James Ryan, and starred Erica Gavin.
Hypothesis: Vixen! is not the second film to have been given an X rating for its sex scenes.