The phrase comes from Argentine football culture, where Boca Juniors supporters are called Bosteros by rival fans, especially those of River Plate. The rivalry between the two Buenos Aires clubs, known as the Superclasico, is one of the most intense in world football, and short insult chants are a staple of terrace humor. Clips like this circulated on Spanish language soundboards and messaging apps as quick audio taunts. It remains popular because the shout is instantly recognizable to fans and works as a compact reaction without any visual context.