This sound is widely shared online as a Korean reaction meme and is often labeled in romanized form as "peikeuda i deula." It spread through reposted clips, short edits and reaction compilations because the line is short, dramatic and easy to drop into fake reveal moments. Creators keep using it when a setup turns out to be misleading, when a supposed win is obviously staged, or when they want a louder alternative to a simple gotcha reaction.