The 'Why So Serious?' meme originates from the iconic 2008 film The Dark Knight, featuring Heath Ledger’s legendary performance as the Joker. The line is delivered during a chilling scene where the Joker recounts a story about his facial scars, emphasizing his chaotic and nihilistic philosophy. Since the movie's release, the phrase and the Joker’s scarred face have become a cultural shorthand for mocking people who are being overly dramatic, uptight, or literal. It is widely used in internet culture to diffuse tension with a touch of menace or to highlight the absurdity of a situation.