The phrase lights, camera, action has long been used on film sets to signal that lighting and cameras are ready and recording is about to begin. As a soundboard clip, it has been stripped down to that single cue and reused online as a quick, recognisable way to frame a moment as a performance. Creators use it to open skits, introduce reveals and add a theatrical touch to short videos, where its familiar wording does most of the work in less than a second.