The phrase is Vietnamese for calling someone a jerk or scoundrel, which explains why the clip travels so well in reaction edits even for viewers who do not speak the language. Its tone does the work: the accusation is clear, direct and easy to place over a betrayal, an argument or a selfish decision. Shared as a short soundboard entry, it has been picked up by creators making Vietnamese-language memes and by wider short-form editors who want a foreign-language insult that still sounds unmistakably confrontational. That combination of brevity and attitude keeps it in regular use.