The line comes from Mount & Blade: Warband, the 2010 medieval action role-playing game, where villagers and other non-player characters address the player as 'My lord' once the player has gained land and status. Clipped from that brief in-game greeting, the farmer's version became a handy reaction sound on meme soundboards and in short-form edits. Its appeal is its simplicity: one respectful phrase instantly sets a medieval scene, signals deference, or undercuts a modern character who suddenly expects to be treated like nobility, keeping it useful long after the game itself.