You know you're not a teenager anymore when…
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-You realize that all your angsty poetry sucks
-You can't eat anything you want without actually gaining weight
-You leave MTV for its older brother, VH1
-Living with your parents begins to look…ridiculous
-Suddenly half of your wardrobe looks even more ridiculous
-Jobs with minimal wage are not as useful to your needs as they used to
-You look as one of those "TV Teens"
-Party in your basement playing Halo is not funny anymore
-Party with girls, booze and Halo IS funny…
-You leave MySpace for Facebook
-Your "pop-star" reference is Britney Spears, or even Hillary Duff; Miley Cirus is nobody for you.
-Your face doesn't look like a Pizza, the Moon surface or an Iraq Battlefield
-Spending the Christmas with your family moved from "Hell" to just "Purgatory" level in the scale of awkwardness
-It's not illegal to respond your "teacher's" smooth moves (if you know what I mean…)
-It's illegal if you are the teacher (but I'm saving that for my "you know you're not a young adult anymore when…")
-Voting doesn't look as glamorous or political relevant as it used to seem
-You realize how retarded you look when you shout "fascist!" at every single person you disagree with.
-…And you actually know the meaning of "fascist"
-You know your parents can't legally ground you…
-…and yet, you try to have "good behaviour", since you also know they can kick you out from their house.
-A break up is a good excuse to eat ice cream or getting drunk, but it doesn't looks anymore like the 2012 Mayan Apocalypse in terms of pain or destruction.
-You can actually think before act…
-…but you do the idiotic thing anyway
And specially, you're not a teen anymore when you stop thinking only in yourself, and start thinking in how much the other people's suck