Booing and whistling have long been the traditional audience response to a poor performance or an unpopular decision in theatres, stadiums and arenas. As a stock crowd reaction, this kind of recording is widely reused by video creators because it is instantly understood without any explanation. Online it appears in sports edits, reaction videos, memes and comedy sketches whenever a creator wants the audience to deliver the verdict. Its staying power comes from that clarity: one burst of disapproval tells viewers exactly how a moment should be read.