The Red 40 Food Dye meme refers to a collection of jokes and visual motifs centered around Allura Red AC, a synthetic food coloring often found in processed snacks and energy drinks. The meme gained significant traction on platforms like TikTok and Twitter, where users satirize the health concerns and behavioral effects—such as extreme hyperactivity—historically associated with the dye. Often depicted through 'brain-rot' humor or images of people with glowing red eyes and unhinged expressions, the meme portrays Red 40 as a source of chaotic power or a forbidden substance. It is widely used to mock modern dietary habits, the intensity of neon-colored junk food, and the ironic embrace of chemically-saturated snacks by Gen Z and Alpha humorists.