The 'Shake Your Screen' optical illusion meme is a digital visual trick that relies on 'illusory motion' to hide an image within a series of vertical or horizontal lines. These illusions gained massive popularity on platforms like Twitter and TikTok, where users challenge viewers to gently shake their devices or move their heads to reveal a hidden celebrity, character, or message. By creating a temporary blur, the brain filters out the high-frequency pattern of the bars, allowing the lower-frequency underlying image to become visible. It is a favorite for engagement-baiting and lighthearted pranks, often featuring popular icons or surprise jokes, turning a static screen into an interactive game of hide-and-seek.