What do movie ratings mean? - Child & Family Development

X (MPAA), Rating System Wiki

A Brief History of the X Rating

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

Fast X (2023) Review – The Action Elite

The Man Who Gave an 'X' Rating to Violence - The New York Times

X (BBFC), Rating System Wiki

Casting Call poster - Flashbak

X-Rated Movies at Yerba Buena – Bayflicks

MPAA - ppt download