Korus circulates online as a short Finnish meme clip connected to the phrase kuka on timo, which asks who Timo is. Its original recording is not clearly documented, so it is best understood as an internet shorthand rather than a line from a known film or show. In short-form edits, the clip functions as a quick identity gag, signalling that someone unfamiliar has entered the scene and deserves a second look. Because it is so brief, it travels between videos, reaction posts and parody edits, and it remains useful whenever a creator wants a recognisable cue for an unexpected person.