Refusing to listen to the friendly advice of friends and helpful strangers (and yes, even the mirror) regarding your fashion to the point that everyone around you looks at what you are wearing and/or how you are accessorizing and thinks "Is s/he insane?!"
I just got the latest "people of wal-mart" e-mail and man those people have a bad case of fashionsanity.
It's over 100 degrees outside today and my kid wanted to wear a hoodie. I tried to talk him out of it but he's already developed fashionsanity. So young too. It's sad.