The lock-on alert comes from Grand Theft Auto V, where homing launchers and aircraft weapons warn players that a missile has acquired a target. Because the game became one of the most played open-world titles, its warning sounds spread quickly through gameplay videos, edits and soundboards. Editors kept reusing the beep outside the game because it instantly communicates danger without any explanation. Its short length and clear rising pattern make it easy to drop into memes, montages and reaction clips.