The clip comes from Floris and his YouTube gameplay, where he starts a session of Clash Royale, the mobile strategy game by Supercell, and announces the start with lets go. That simple opening line was cut out and shared as a standalone sound, which is how short gaming catchphrases often spread among viewers and other creators. Fans and editors reuse it outside the original match because the phrase signals the start of anything competitive, making it useful far beyond Clash Royale itself as a quick, recognisable kickoff.