4-LOM is a bounty hunter droid from the Star Wars universe, best known among the hunters assembled in The Empire Strikes Back, and he later appeared as a playable character in the Lego Star Wars video games. In those games, droids do not speak full lines, so their dialogue is rendered as short bursts of electronic chatter, and this clip is one variation of that sound. Shared on soundboards, it became a handy shorthand for robot speech in fan edits, parodies and gaming videos, where a single burst instantly signals a droid character.