In junior high, i apparently thought i was hot-sh*t, for some unknown reason. A kind of dorky girl walked by me in the hallway with some really ugly shoes, and, showing off to my pals, i said to her 'dont ever wear those shoes again'. I was too stupid to realise that I had hurt her, but was later embarrassed when i went swimming at a new friend's house and found out the dorky girl was her sister.
I still cringe thinking about that, cos it was really awful and there was no excuse for it.
How often do you floss your teeth?