One day out of the year, we all ask "What day is it?" and a video/meme/GIF of Lindsay Lohan staring at Jonathan Bennett over an open textbook circulates the internet and sets social media ablaze. "It's October 3rd" reads the text at the bottom, and just about everyone under the age of 35 knows the exact context of the seemingly random date. 

Yes, it's a brief exchange from the 2004 film Mean Girls, and it's probably woefully meaningless to anyone old enough to have seen The Breakfast Club in theaters. For those of us classified as "millennials," it's among the most memorable lines from one of the most iconic movies of our lifetimes. Bust out your pink this Wednesday, here are five reasons why Mean Girls was so fetch.

There are Heaps of Quotes

While everyone discusses how "classic" movies from the 20th century are, nostalgia is just now starting to come around to the beginning of the 21st. Let's look at some of the comedies released in 2004: Anchorman, Dodgeball, Napoleon Dynamite, Eurotrip, White Chicks, the SpongeBob SquarePants Movie and, of course, Mean Girls. That's as good of a run on hilarity as any year could boast, and it includes some of the most quotable films of all time. Mean Girls alone gave us gems like "You go Glen Coco," (in the same scene as) "And none for Gretchen Weiners," "I'm not like a regular mom, I'm a cool mom," "You can't sit with us," and "Oh my God, Karen, you can't just ask someone why they're white." We could keep going, but there are other reasons Mean Girls is great, so if you want some other quotes, you could try Sears.

Inclusion is the Main Theme

Despite all of the Plastics being white (which actually makes the equality message of the movie work even better), Mean Girls is ultimately about seeing beyond people's differences. Whether you're the daughter of the inventor of Toaster Strudel or almost too gay to function, the students of North Shore High School are all equal people through Cady Heron's eyes. Various races, sizes, disabilities, and sexual orientations are attacked by Regina George and the Plastics' "Burn Book," leading to a massive free-for-all throughout the entire school before everyone united through the power of school assembly. Heron even goes as far as splitting up the Spring Fling Queen's crown and throwing pieces into the crowd so others can share in the joy. In hindsight, Regina George and Donald Trump don't seem that different, so maybe we should just bake a cake filled with rainbows and sprinkles and everyone would eat and be happy.

Teenage Drama is Timeless

Whether we're talking about Pretty in Pink or High School Musical, some things about being a teenager just don't change. Mean Girls captured the essence of high school in the early 21st century perfectly, and can really be translated to anyone who's ever been in high school. Much like how all of the Molly Ringwald films of the '80s are still relevant and viewed as classics today, Mean Girls deserves to live on through the next generations of disenfranchised teenagers as they deal with the battle to lose three pounds, the rules of feminism, and math teachers who are pushers.

The Cast is Perfect

Although we'll never know where everyone from Tina Fey and Amy Poehler to Rachel McAdams and Amanda Seyfried would be without Mean Girls, they were certainly perfect for their respective roles back in 2004. Everyone from Lizzy Caplan to Tim Meadows fit flawlessly into the cast, and the movie wouldn't be anywhere near the same without them (just look at the ill-fated sequel). Some actors will likely never outgrow their characters (Daniel Franzese will always be Damian and Lacey Chabert may never see another career resurgence quite like Gretchen Weiners), but everyone from Mean Girls will always have a special spot in high schoolers' hearts for years to come.

It's the High School Movie of a Generation

Everyone knows a Regina George or a Cady Heron. We've all met a Janis Ian or a Karen Smith. Just as The Breakfast Club gave us the high school archetypes of the '80s and Clueless captured the '90s, Mean Girls cleared away the brush of the high school jungle for the 2000s. Forget flowery nonsense like High School Musical or the ridiculous levels of drama on Degrassi, Mean Girls walked the fine line of being funny, serious, and almost too relatable. What kind of impact has Mean Girls had over the last 12 years and will continue to have into the future? The limit does not exist.

And remember, don't let the haters stop you from doing your thang.