“Box, box” is standard Formula 1 pit radio language, used by teams to tell a driver to pit on that lap. The phrase became widely recognised through race broadcasts, onboard team radio clips and the growth of F1 highlights online, especially as motorsport meme culture expanded in the 2010s and 2020s. It stays popular because even non-fans can understand its meaning from context: an urgent instruction to come in, reset the plan or react immediately.