Pu jie comes from Cantonese slang, where puk gai literally describes falling down in the street and wishing the same bad luck on someone else. Long used as a street insult in Hong Kong, the phrase became familiar far beyond the city through Hong Kong cinema, television dialogue and everyday Cantonese speech. Online it survived as a short reaction clip because the meaning is clear from the tone alone, even for listeners who do not speak Cantonese, and the single shouted phrase fits memes, gaming edits and chat replies.