Regina George is the central antagonist of the 2004 teen comedy Mean Girls, played by Rachel McAdams. Her polished, controlling persona made any loss of composure especially memorable, and clips of her screaming were later lifted from the film and shared as standalone reactions. As Mean Girls stayed in popular culture through quotes, anniversaries and social media edits, the scream spread on TikTok, YouTube and soundboards as a reusable audio for outrage and disbelief. It remains popular because the performance is instantly recognizable even without the picture.