How did this happen? When did this happen? I am not 15 anymore.
I can pull rank on all my college-age and younger friends though, and get away with it! "I'm too old to put up with this nonsense, I'm not 21 anymore! Go bother someone who is!"
See, the reason for the phenomenon known as "teenage angst" is that all the older people like me continually dump all the world's problems onto poor innocent teenagers by telling everyone who bothers us that we're not 18 anymore and they should go bother someone who is.
Now you know.