DJ drops like this come from DJ tool packs and soundboards where MC shouts are shared as ready made intros and transitions. The Kmack version circulates under variations of drop that shit and dj drop 3, tagged to K.Mack, and is used more as a functional cue than a standalone song. DJs, editors and streamers keep reusing it because the phrase is instantly understood, works over almost any genre, and signals a drop without needing extra explanation or buildup in the edit itself.