The phrase comes from the Call of Duty games, where Bravo Six is a military call sign used by special forces teams during radio communication. The clipped delivery and the idea of going dark, meaning to cut contact and operate unseen, made it a natural fit for short-form video. On TikTok, YouTube Shorts and meme edits, creators began using the audio to mark exits, disappearances and abrupt endings, and its familiarity to gamers helped it travel beyond gaming clips into everyday reaction videos.