The 'Sure Jan' meme originates from the 1995 comedy 'The Brady Bunch Movie,' a parody of the classic 1970s sitcom. In a memorable scene, Jan Brady invents a fictional boyfriend named George Glass to make her sister Marcia jealous. Marcia, clearly seeing through the transparent lie, responds with a patronizing smile and the iconic line, 'Sure, Jan.' The image of Christine Taylor’s dismissive expression became a viral sensation decades later, serving as the internet's go-to reaction for blatant lies, delusional claims, or anytime someone is being painfully obvious with their fabrication.