The line comes from Overwatch, released by Blizzard in 2016, where gunslinger Cole Cassidy announces his Deadeye ultimate with 'It's high noon.' The phrase itself nods to classic western duels at midday, which made the delivery instantly memorable even to players who had never used the character. Clips of the ultimate, parodies, and remixes spread across YouTube, Twitch, and meme edits, turning the warning into a universal cue for an approaching showdown. It remains popular because the meaning is clear in under two seconds.