No source work, performer or year is documented in the information supplied for this clip, so its origin cannot be stated. The clip is known only by the label Silbido Mario Valdés, with the code PU24 attached to the original upload title. As a soundboard entry, it is found through its name by people looking for a whistle sound to reuse, rather than through a wider story or shared reference. That name-based discovery explains its continued use: a short, clearly labelled whistle remains easy to find, recognise and reuse in edits and messages when a creator needs that exact sound.