Japanese school bells have become a recognisable shorthand online for school life in Japan, thanks largely to anime and short-form videos that use the chime to open a classroom scene. The 'be like' format pairs the sound with exaggerated school moments, from students rushing to class to teachers starting a lesson, turning an everyday signal into a punchline. Because the tune is instantly associated with Japanese schools, creators keep returning to it whenever they want that setting without needing to explain it.