Airhorns have long been used at sporting events and celebrations to grab attention, and that loud, unmistakable blast made them a natural fit for online comedy. Creators began dropping the sound into prank videos, meme edits and reaction clips as an instant signal that something funny, surprising or over-the-top had just happened. Because the noise needs no explanation and works in almost any language, it spread across short-form video and streaming culture, where it remains a quick, reliable way to turn a small moment into a joke.