This audio is associated with Manu Gavassi's Eu Dou Risada, a Brazilian pop track whose laughing section spread online as a standalone reaction clip. On social platforms and in chat forwards, people often label it Atumalaca, a name that stuck even when the source credit varies between uploads. Its popularity comes from how instantly readable the laughter is: it can mean mockery, disbelief, petty victory, or pure chaos without needing any extra context. That flexibility keeps it circulating in meme edits and short videos.