Mean Girls Day is observed worldwide every October 3, celebrating the popular 2004 teen comedy film "Mean Girls," written by Tina Fey and directed by Mark Waters. Fans commemorate the day by re-watching the movie, quoting its iconic lines, and wearing pink, as well as enjoying Taco Bell or cheese fries, which are referenced in the film. The date holds significance in the movie when the character Cadie, played by Lindsay Lohan, responds to her love interest Aaron by stating, “It’s October 3rd.” The film has gained a cult following and has been referenced by various social media accounts, including notable ones like the White House. "Mean Girls" grossed $129 million worldwide and has an approval rating of 84% on Rotten Tomatoes, solidifying its status as a pop-culture phenomenon.