Bell strikes have been used for centuries to signal class changes, services and public announcements, and that familiar meaning carried directly into video editing and memes. Online, creators reach for a loud, isolated clang when a subtler cue like a ding sound effect would get buried in the mix, or when they want a more dramatic toll similar to the Taco Bell bong. The two-second length makes it easy to loop, layer or cut short, which is why it keeps appearing in school parodies, alert jokes and timed reveals.