Le Fou du Bus circulates online as a short French reaction sound, shared and reused in meme edits where an exaggerated public outburst fits the joke. Because the clip is brief and immediately recognisable by its frantic tone, it works as a shorthand for losing patience, especially in videos about travel, arguments, or plans going wrong. Its appeal is not tied to a single scene or storyline, but to the feeling it conveys: sudden, public, and slightly absurd frustration. That flexibility has kept it useful for creators who want a quick, human reaction without explaining the context.