DaBaby, the stage name of American rapper Jonathan Kirk from Charlotte, North Carolina, built lets go into a signature ad lib across his songs and freestyles. The shout spread beyond rap through TikTok clips, YouTube edits and gaming videos, where fans paired it with confident entrances, races and comeback moments. It also rode the wider wave of DaBaby memes that made his voice instantly recognisable online. The phrase stays popular because it works without explanation, signalling pure momentum in just two words that anyone can quote, remix and time to a beat drop.