The Joker has been Batman's most famous villain for decades, and his laugh is one of the most recognisable sounds in popular culture, appearing across comics, animated series, films and games in many different performances. Because no single version owns the gag, the laugh works as a shorthand for chaos and dark humour online, where creators reuse it to signal a twist, a betrayal or a joke taken too far. Short clips like this one spread through meme edits and reaction videos, and they stay popular because the sound is instantly understood even without any picture of the character.