Discord is a voice and text platform built around servers and voice channels, where joining a call is a routine, instantly recognisable moment for gamers, streamers and online friend groups. Because that notification is heard so often during streams and gameplay, short recordings of it began circulating on soundboards and in editing packs as a shorthand for someone arriving. Creators keep using it because audiences recognise it immediately, even without any on-screen explanation, and it adds a familiar, real-world online feeling to edited clips and reaction videos.