School bells have been used for generations to mark the beginning and end of lessons, breaks and the school day, so the sound carries a strong shared meaning for listeners of all ages. Online, short bell clips are commonly reused in videos, memes and short-form edits because they communicate a school setting in seconds, without needing explanation or visuals. Their popularity endures because the tone is instantly recognisable, easy to place over footage, and flexible enough to work for comedy, nostalgia, classroom scenes and countdown-style jokes.