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MP3 다운로드 
The exact origin of this clip is unclear, but its phrasing spread online as a short-form reaction sound because the drawn-out uuu is easy to recognise even without context. It circulates on soundboards and in meme edits where creators need a quick, vocal way to question an entrance or an identity. Its popularity comes from its flexibility, working for strangers, latecomers and characters acting out of place, and it remains in use because the delivery alone signals confusion and playful suspicion in under four seconds.
이 사운드에 대해
A short voice clip of someone asking oh who is uuu in a confused, drawn-out tone, used as a reaction sound for awkward introductions and unexpected arrivals.
This is a brief, drawn-out vocal reaction where a voice asks oh who is uuu with the final word stretched and pitched up in disbelief. It sounds less like a real question and more like a playful challenge, as if the speaker has just noticed a stranger and cannot decide whether to be curious or suspicious. The slow delivery and elongated uuu give it a goofy, slightly dismissive energy that instantly turns a normal entrance into a joke. Viewers hear it as an exaggerated greeting that questions who the person is and why they are even there.
