This legendary clip originates from Tim Burton's 1989 film 'Batman,' featuring Jack Nicholson in his career-defining role as Jack Napier. After surviving a fall into a vat of chemicals and undergoing a botched back-alley plastic surgery, Napier steps out of the shadows to reveal his permanent, ghastly grin. He dramatically declares to his former boss, 'You can call me... Joker,' marking the official birth of the Dark Knight's greatest nemesis. In modern meme culture, this template is the gold standard for representing a 'villain arc' or a dramatic shift in personality. It is commonly used when someone decides to stop being polite and embrace their chaotic side after a series of inconveniences. Example captions include: 'Me after my manager denies my PTO request,' 'When you finally lose your mind in the group chat,' and 'Me changing my entire personality after watching one movie.'