Jhin is a marksman champion in League of Legends, released in 2016, whose entire kit is built around the number four. He fires three ordinary rounds before his fourth shot, which deals bonus damage and always critically strikes, so the sound became a recognisable cue for players long before it spread into short videos and memes. Editors now borrow that in-game tension, using the single gunshot to signal a decisive moment even for viewers who have never played the game.