The line comes from Blizzard's hero shooter Overwatch, released in 2016, where gunslinger Cole Cassidy, originally named McCree, announces his Deadeye ultimate with 'It's high noon.' The phrase borrows from classic western films, where duels were staged at midday for a fair, dramatic fight. As Overwatch clips spread on YouTube, Twitch and meme pages, the quote escaped the game and became shorthand for any tense standoff. It remains popular because the delivery is instantly recognisable, even to people who have never played.