Friends ran as a hugely popular American sitcom in the 1990s and early 2000s, and its warm, communal laughter became one of the sounds most closely tied to the show's lighthearted tone. Short clips of that laughter later spread through reaction videos, memes and soundboards, where a few seconds of group laughter can signal a joke without any words. Because the show remains widely watched and quoted, the laugh still reads instantly to audiences who recognise the series, even when they have not seen the original scene.