The phrase first of all has long been used in everyday speech to signal that a speaker is about to correct, clarify or push back on something, and that familiar rhythm helped this short clip spread online as a reaction sound. It circulated on soundboards and in short video edits where creators needed an instant setup for a disagreement or a list of points. Its popularity comes from how recognisable the opening is on its own, so editors can drop it in without any extra context needed.
Об этом звуке
Short voice clip of a man saying first of all before making a point, popularised by DaBaby memes. Creators use it to start a rant, correction or comeback.
This is a brief voice clip of a speaker opening with the phrase first of all, delivered in a firm, matter of fact tone before the rest of the thought lands. The pause and emphasis make it feel like a correction is coming, which is why the short runtime works so well as a setup. Viewers instantly read it as the start of a rant, a rebuttal or a confident take, and that anticipation creates the comedy even before anything else is heard in the edit that follows it.