The phrase and effect come from DJ and hip hop performance, where cutting the beat means stopping the track instantly using a mixer, turntable or crossfader. Online editors borrowed that move for short form video because it works like punctuation, ending one mood and starting another without any explanation. It spread through meme edits, reaction videos and TikTok transitions where the silence after the cut became part of the joke. It is still used because viewers instantly understand the signal, even without seeing a DJ or any turntables on screen.