The phrase mirrors the automatic WhatsApp system message shown when a participant leaves a group, which in Portuguese reads as saiu do grupo. Brazilian and Portuguese speaking users turned that everyday notification into a meme format, adding mais um to stress that yet another person has gone. Short clips of the line spread through group chats, meme pages and video edits as a ready made reaction, and it stays popular because group exits are a familiar, slightly dramatic part of online social life that everyone recognises instantly.