The line comes from Luciano Spalletti, the Italian football manager known for blunt, often memorable answers in interviews and press conferences. His question, asking who gave someone his phone number, was picked up by Italian football fans and shared as a short reaction clip on social media, where it became a shorthand for surprise at an unwanted contact. It remains popular because the delivery is dry and instantly understandable, even for listeners who do not follow Serie A closely, and because the situation it describes is familiar to almost everyone.