The exact recording source of this clip is not documented, but the phrase itself is common Brazilian Portuguese slang. Vtnc is an abbreviation of a vulgar dismissal, while tu usa calcinha mocks someone as weak or cowardly. Short insult clips like this spread through Brazilian group chats, meme pages and soundboards because they work without any context or setup. Its very brief length makes it easy to reuse as a reaction, and it remains popular in Portuguese speaking online spaces where quick roasts are part of everyday humour and banter.