This meme sound is built around DaBaby’s well-known “let’s go” ad-lib, which became widely recognisable through his music, interviews and online clips. The phrase spread across short-form video because it is quick, loud and instantly readable even without context. Editors started using it as a reaction cue for reveals, wins and ironic overconfidence, and it remains popular because the delivery is so easy to match with sharp cuts, zooms and punchline timing.