DaBaby, the American rapper from Charlotte, built his flow around short repeated ad-libs, and let's go became the one listeners recognised instantly across tracks and live clips. Fans began isolating the shout and reposting it as a standalone reaction, with many typing it as less go from how the fast delivery sounds. It spread through TikTok, gaming edits and sports highlights as a universal starting signal, and its brevity and confidence keep it in rotation long after the original clips first circulated online widely.