A "total fan" is a person who is an ardent admirer and enthusiast of something or someone, often going to great lengths to show their support. This term can be used in various contexts such as sports, entertainment, music, etc., where fans demonstrate their devotion through activities like attending events, collecting memorabilia, following news and updates about the subject, and engaging with other fans. A total fan is someone who is completely dedicated to their favorite team or idol, and they are willing to go above and beyond in showing their love and support for them.