Summary
This quote suggests that by the time you realize or notice a popular trend or movement, it is already too late to be a part of it. It implies that being on the bandwagon implies being part of something that has become mainstream and widespread, and if you only see it after it has gained significant momentum, you have missed the opportunity to truly be a part of it from the beginning. The quote highlights the importance of being proactive and aware, rather than simply following the crowd.