Ring bells have long been part of boxing, sounded to open and close each round and to signal a knockout or the end of a bout. That simple, instantly recognisable signal moved naturally into online video, where creators use it as shorthand for a fight, a contest or a final decision. It works because almost everyone recognises the sound from televised matches and gyms, even if they never watch boxing regularly. In memes and edits it now marks everything from playful arguments to real sporting highlights, keeping its original sense of a contest beginning or ending.