If there's one great thing about being a teen (aside from being able to wear stupid-looking clothes and blame it on your friends) it's that you can speak bluntly and impulsively ... much more than you can once you join the workforce.
"OMG, why are you freaking out? I was ONLY an hour late!"
"OK, fine, three more tweets and I'll be right there."
"Wow, I can't believe you asked me that. I KNEW IT. YOU'RE SPYING ON ME."
"Um, I'm gonna need waaay more money than this."
"WHY IS EVERYTHING ALWAYS MY FAULT?"
"Everyone wears their pants like this now."
"Dude. We're not going to be Facebook friends. Stop requesting me, stalker."
"This is MY ROOM. Get OUT OF MY ROOM!"
"You're not the boss of me!!!"