The Insidious Lipstick-Face Demon meme is based on a legendary jump scare from James Wan’s 2010 supernatural horror film, Insidious. In the scene, the character Josh Lambert (played by Patrick Wilson) is having a conversation when the demonic entity suddenly appears directly behind him. Online, the image became a viral sensation as a way to represent things that catch people off guard or 'creep up' on them, such as deadlines, responsibilities, or sudden realizations. Its high-contrast imagery and pure shock value make it an effective template for relatable anxiety and unexpected surprises in daily life.