DaBaby, the American rapper born Jonathan Lyndale Kirk, built let's go into one of his most recognisable ad-libs across songs, performances and interviews. As his music spread widely online in the late 2010s and early 2020s, fans began isolating the shout and reposting it as a standalone reaction sound. Mishearing it as less goo helped the clip travel further on soundboards and short videos, where its short length and unmistakable delivery made it easy to reuse for hype, irony and quick punchlines.