The 'Don't Believe His Lies' meme originates from Christopher Nolan's 2000 neo-noir psychological thriller, Memento. The image depicts the protagonist, Leonard Shelby, who suffers from short-term memory loss, holding a Polaroid photograph of a character named Teddy with the handwritten warning 'Don't believe his lies' scrawled across the bottom. In digital culture, this template has evolved into a versatile tool for skepticism. It is frequently used to mock corporate PR, political promises, or any situation where someone is being blatantly dishonest. The meme resonates because it captures the universal feeling of being warned about a deception that everyone else seems to be falling for.