The Chk-Chk-Boom Girl meme features Clare Werbeloff, an Australian woman who became an overnight sensation in 2009 after a dramatic eyewitness interview following a shooting in Kings Cross, Sydney. Her animated description of the event, punctuated by the catchphrase 'chk-chk boom,' quickly went viral for its questionable accuracy and over-the-top delivery. While the story turned out to be a fabrication, the internet embraced her theatrical persona and distinctive slang. Today, the template is used to describe moments of sudden impact, dramatic reveals, or situations where someone is clearly exaggerating a story for comedic effect.