The phrase is Russian slang for asking who defecated, and online it circulates mainly as a short, shareable voice clip rather than as a line tied to a widely known film, show or song. Its appeal is deliberately crude and universal, since almost everyone recognises the awkward moment of blaming someone for a bad smell. On soundboards and in short-form videos it is used as a standalone reaction, often without translation, because the tone and context make the meaning clear enough for the joke to work across languages.