Laughter and applause are among the oldest audience reactions used in broadcasting, long associated with live shows, comedy programmes and award ceremonies where a crowd signals enjoyment and approval. Online, short recordings of that reaction have become a staple for creators who want to add instant social proof to a clip without filming an audience themselves. The combination works because listeners recognise it immediately, even at low volume, and associate it with success, humour and celebration. It remains popular in reaction videos, memes, presentations and streams because it is versatile, upbeat and easy to place over almost any positive moment.