The light flicker has no single credited film or show as its source, and versions of it circulate widely as a generic electrical effect in editing libraries and soundboards. Creators picked it up because flickering lights are a visual shorthand in horror, thrillers and escape room videos, and the matching buzz makes the effect work even when viewers are only listening. It remains popular for short form edits, game streams and haunted house content, where a few seconds of unstable light quickly signals danger, a power fault or something supernatural approaching.