This Hokkien expression is common in Taiwan and among Hokkien-speaking communities in Malaysia and Singapore, where it works as a playful or exasperated way to call someone crazy. As short reaction audio, clips like this circulate on soundboards and in short-form videos because the phrase is punchy, rhythmic and instantly expressive. Creators who grew up hearing it use it to roast friends without switching to English, while wider audiences enjoy the raw tone. Its appeal is the universal feeling of disbelief it captures in three seconds.