The line comes from the Mortal Kombat fighting game series, where an off-screen announcer directs the winner to finish a beaten opponent before a Fatality. The phrasing follows the series' best-known cue, Finish Him, adapted here as Finish Them. Clips from Mortal Kombat Shaolin Monks and other entries were ripped and shared on soundboards and in edit packs, so the command spread far beyond the games. It endures alongside other terse game callouts like enemy spotted because a single, instantly recognised order can set up a punchline without any context.