File:X MPAA.png - Wikipedia

MPAA X Rating, Scary Logos Wiki

X 18+ - Wikidata

The Best X-Rated Movies in History

File:X rating symbol.png - Wikimedia Commons

Fritz the Cat (1972) JPK's Adventures in Cinema

Nymphomaniac librarian in 'The Wicker Man' – REEL LIBRARIANS

Saw X' Is The Most Well-Reviewed Saw Movie Ever, By A Huge Margin

X-BIONIC Wollerau

X Community Notes used to challenge ads by Apple and others - 9to5Mac

On this Day in Movie History, November 1, 1968: MPAA Film Rating System Becomes Effective – Michigan Movie Magazine