The bell has been Taco Bell's audio logo for decades, tied to the mission bell in its name and branding and heard at the end of television adverts in the United States. The isolated chime later spread online as a standalone effect, first through edits and soundboards and then across Vine, YouTube and TikTok. Stripped from the advert, its solemn tone became funny in everyday contexts, so creators kept reusing it as shorthand for a moment landing badly or a thought hitting home.