This hasn't happened in a while.
So, since I'm just giving an exam today and then going to a soccer game, I thought I'd just wear jeans and a sweater. And, of course, I was mistaken as a student by one of my colleagues. Come on, you see me in the hall all the time. It just drives me crazy because of all things one might judge me to be, of course, an instructor is the last thing I'd be.