The sound comes from the everyday world of Rio de Janeiro's suburban trains, where travelling vendors turn each carriage into a small stage. Gordão do Trem became a local favourite on the Japeri branch for his chocolates and his larger-than-life sales patter, and passengers began recording and sharing the moment online. As those clips circulated in Brazilian meme and reaction communities, the call stopped being just a train announcement and became shorthand for a funny, chaotic commute. It endures because it is instantly recognisable, warm and tied to a shared daily experience.