Remember your angsty, pre-teen and teen years of the 2000s? Nobody understood you and you were a loner, and you wanted to make sure everyone knew — so you had very specific ways you rebelled in the 2000s, in case anyone was confused about where you stood in life. Your parents wanted you to be more like your sister, your teachers wanted you to try harder (because you were smart but "just didn't apply yourself"), and your crush had a thing for your BFF. So what did you do? You rebelled.
Instead of having blonde hair like all the other girls, you went with the most obnoxious shade of electric blue you could find. Instead of channeling Britney Spears with your wardrobe, you embodied Daria. You refused to eat meat and stayed up all night and read a ton of Sylvia Plath, all so everyone knew: You were different. You weren't like other girls. If life was like 10 Things I Hate About You, you were Kat, not Bianca.
And just to really drive the point home — because you wanted everyone to know that no one's the boss of you and you make your own rules — you very likely rebelled by doing this 12 things.