Yeosina meogeora is a well known Korean slang expression built around yeot, a traditional taffy often given playfully on exam days, which is why telling someone to eat it became a cheeky insult. The phrase has circulated for decades in everyday speech, comedy and online slang before short clips like this one spread on soundboards. Its brevity and clear dismissive meaning made it popular with Korean speaking creators for reaction edits, gaming clips and messaging jokes where a polite no would feel too weak.