Mark your calendars! On April 30, "Mean Girls" will have officially premiered 12 years ago. Yes, that's right, it's been 12 years. That's 12 years of laughs and some of the most memorable movie lines of all time. Whether you're part of the plastics, burnouts, sexually active band geeks, or the art freaks, it's hard to deny that this chick-flick has produced some pretty incredible one-liners. These "Mean Girl" quotes are applicable in everyday situations. Try them out!

1. "Grool."

Why say in two words what you could say with one? There's no need to settle for "great" or "cool," that's so 2003. Thanks to Cady Heron, you can say both!

2. "Get in, loser. We're going shopping."

It's straight-forward, simple, and to the point. How can you say no to that? Regina George's catty-ness has actually paid off.

3. “Ex-boyfriends are off-limits to friends. That’s just, like, the rules of feminism.”

If someone asks you why you're a feminist or what feminism is, you now have an answer! Karen Smith keeps things simple.

4. “I don’t hate you ‘cause your fat. You’re fat ‘cause I hate you!”

This is the ultimate save if you've told someone that they actually look bad in that dress. There's no confusion here!

5. “'Cause she’s a life ruiner. She ruins people’s lives.”

There's no need for uncreative or lackluster insults, Janis Ian sums up exactly what you want to say about the mean girl in your life in just two sentences.

6. “You smell like a baby prostitute.”

Janis Ian is at it again with yet another perfect insult.

7. “She doesn’t even go here!”

If you're looking to discredit someone for any reason at all, this should be your go-to. It raises an important question: does this person even go here?

8. “Whatever, I’m getting cheese fries.”

What's more important: losing three pounds or cheese fries? Cheese fries are always more important. Thanks for validating, Regina!

9. "Boo, you whore."

This is perhaps the most universal "Mean Girls" quote. Your friend won't go out for queso and margaritas? "Boo, you whore." Your boss wants you to stay late on a Friday? "Boo, you whore." Your dog wakes you up in the middle of the night? You guessed it: "Boo, you whore."

10. “The limit does not exist.”

This applies to everything, not just math. For example: how many shoes you can own, how many ice cream cones you can eat, and how many puppies you can play with. Seriously, it applies to everything.

11. “You go, Glenn Coco.”

We all need this kind of support in our lives. We all deserve to be someone's Glenn Coco.