By ETONLINE STAFF
It's the 10-year high school reunion for the students of Mean Girls! Since the April 30, 2004 release of the teen comedy, starring Lindsay Lohan, Rachel McAdams, Tina Fey, Amanda Seyfried and Lacey Chabert, die-hard fans of the film have been making "fetch happen!"
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On Mean Girls' 10-year anniversary, ETonline has rounded up the 10 most valuable life lessons the girls and the too-gay-to-function Damian ("That's only OK when I say it!") of North Shore High have taught us!