Whatever Happened to the X Rating?

Adult rating, Rating System Wiki

cinema history - Why would a movie that appears pornographic via it's rating (X) receive an Academy Award? - Movies & TV Stack Exchange

Movie Poster of the Week: Rated X at the Quad on Notebook

X-Rated Movies: 28 Provocative Films That Challenged the MPAA – IndieWire

Mr. X Movie Tickets & Showtimes Near You

S#x Acts Movie Tickets & Showtimes Near You

Fast X is given a 12A age rating

The movie ratings G, PG, PG-13, and R are obvious in why they are different. But what are the difference between NC-17, X, and Unrated? - Quora

Stanley Kubrick on X: Welly well well well A Clockwork Orange was released in the US #OnThisDay, 1972. Having been awarded an X rating in its original release, Kubrick replaced around 30

Film Ratings Explained: What Are The Arbitrary Differences Between Film Ratings And Why They Exist - Hollywood Insider