The phrase 'On Wednesdays We Wear Pink' originates from the 2004 cult classic film Mean Girls, written by Tina Fey. In the scene, Karen Smith (played by Amanda Seyfried) informs the newcomer Cady Heron of the strict dress code enforced by 'The Plastics,' the school's elite clique. Since the film's release, the quote has transcended cinema to become a global cultural phenomenon, often used to signify exclusive group rules, fashion choices, or a sense of belonging. Online, the meme is frequently adapted to various contexts where a specific, often arbitrary, rule must be followed to maintain status within a group, making it a staple for pop culture commentary and social media humor.