The clip comes from Vietnamese internet slang, where thg is a shortened form of thằng and liều describes someone daring to the point of recklessness. The full phrase is typed in casual comments and captions when a video shows a person taking an unnecessary risk. Because the recording is very short, it spread easily as a reusable reaction sound on soundboards and in short video edits. It remains popular for its specific mix of surprise and judgment, letting creators comment on bold behavior without adding their own voiceover or explanation.