The line comes from Portal, Valve's 2007 first-person puzzle game, where white sentry turrets guard test chambers built by Aperture Science. Voiced with the same sweet synthetic performance as GLaDOS, the turrets politely announce targets before firing, making phrases like there you are instantly recognisable. Clips of the line spread through gaming videos, remixes and reaction edits in the late 2000s and 2010s, and it remains a shorthand for being spotted because the delivery is cute, calm and unmistakably mechanical rather than threatening.