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Remember last decade, how you used to quote Mean Girls word for word while talking to your best friend on your Nokia cell phone? You wore low-rise jeans with tiny t-shirts and Rocket Dog sandals and spent your afternoons requesting music videos on TRL and learning the dance moves to "I'm a Slave 4 U." We'll be honest; we still quote Mean Girls and try to copy Britney Spears routines, but we look back on those days with equal parts dreamy nostalgia and sheer horror. We're taking a trip down memory lane with all the best (and worst) things about coming of age in the aughts. So here we go: you know you were a teenager in the 2000s if . . .
— Additional reporting by Lauren Harano