The phrase is French slang, with bas les couille understood as a vulgar way of saying someone could not care less, while ballon adds a loose, throwaway ending that makes the line sound even sillier. No single confirmed film, show or creator is tied to this recording, so its life is mainly online as a shared soundboard clip. French speaking users pass it around as a ready made answer, especially in chats and short videos, where the René name gives the dismissal a specific, character like feel.