The line comes from The Elder Scrolls IV: Oblivion, released in 2006, where Imperial city guards call out crimes with stiff, loud delivery. Their barks became iconic for how serious they sound compared to the game's janky AI. Soundboard clips of lines like this spread through YouTube and meme edits in the 2010s, and guards shouting about attacks, similar to the fnaf jumpscare scream for sudden panic, remain a shorthand for an NPC overreacting to player chaos.