File:X MPAA.png - Wikipedia

Adult rating, Rating System Wiki

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

getTV - The movie ratings system began 51 years ago today — Nov 1, 1968. The first ratings were: G — General Audiences M — Mature (became PG) R — Restricted X —

8 Provocative Facts About the X Film Rating

CLOCKWORK ORANGE, Stanley Kubrick, X Rated Ratings Box Original Movie Theater Poster - Original Vintage Movie Posters

This Film Is Not Yet Rated (Movie 2006): MPAA Gets an 'F

X RATING FOR 'ANGEL HEART' IS UPHELD - The New York Times

X-Men: Days Of Future Past Includes Nudity According To MPAA Rating

Project X Parents Guide

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