Salah banget is everyday Indonesian slang, with bgt as the common texting abbreviation of banget, meaning very or really. Online, shortened voice reactions like this circulate through chats, edits and soundboards because they capture a familiar phrase people already type to each other. The clip's popularity comes from that recognisability rather than a single known performance. It has become a reusable shorthand for saying someone got it completely wrong, especially in Indonesian speaking communities sharing jokes about school, games and daily mistakes.