File:X MPAA.png - Wikipedia

X (MPAA), Rating System Wiki

A History of the X and NC-17 Ratings – The Hollywood Reporter

Best X-Rated Movies: Adult Movies That Are Actually Good - Thrillist

RetroNewsNow on X: 🎬On September 26, 1990, the Motion Picture Association of America replaced the 'X' rating with NC-17 (No Children Under 17 Admitted) / X

Nymphomaniac librarian in 'The Wicker Man' – REEL LIBRARIANS

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

Rating X: Twitter's chaotic year under Elon Musk's shock treatment

Project X Movie Review

What is the difference between the movie ratings R (17+), X (19+) and XXX (21+) other than age, and what do they mean? - Quora

original version of the movie ratings poster before the X rating was changed to NC-17 : r/RedditDayOf