School's back in session, so what better way to reminisce on triumphs and horrors of high school than with Mean Girls, the movie that was almost an ethnographic study on the social hierarchies of high school but was hilarious in its delivery. That now seems like a given with a script by Tina Fey, but the movie lives on in all of the quotes and idioms made popular by Lindsay Lohan, Rachel McAdams and others. Gather your own clique and quote away as the drama unfolds on screen.