There is no clear source work attached to Kostum 2, so it is best understood as a user-uploaded TikTok trend clip rather than a line from a film or show. Its title points to a costume theme, while its tag, cepat, is Indonesian for fast, which fits a clip lasting only about a tenth of a second. Online, that combination suits rapid-fire edits, where a brief sound marks a change of outfit or scene without interrupting the pace. Its appeal is practical: it is short enough to drop into almost any fast cut.