DaBaby, the American rapper who broke through in 2019, made let's go one of the most recognisable ad-libs in modern hip hop, repeating it across tracks and performances until fans treated it as his signature call. Short clips of the phrase spread through TikTok, gaming videos and meme edits, where the exaggerated goooo version became a standalone reaction sound. Its appeal is simplicity: two familiar words, delivered with total confidence, that anyone can recognise in under a second and reuse for wins, starts and hype moments without needing any context from the original song.