The quaso clip is associated with Elira Pendora, a virtual streamer from Nijisanji, and is best known online as a brief reaction sound rather than a musical excerpt. In fan edits, streams and short videos, it is used to mark a sudden change of mood, a joke landing sideways or a moment that is deliberately hard to take seriously. Because the sound is so short and distinctive, it is easy to recognise even out of context, and that instant recognition helps explain why it continues to appear in new memes and reaction compilations.