I thought I was the only one who would do something that crazy, but a friend on facebook just posted a picture of her two different shoes while she's at work.

I did it during grad school at an internship at a middle school. I had a pair of shoes in my car already under my seat, and I drive without shoes on so I kicked them off and had two different kinds of shoes under there. I was late and stressed and of course didn't look at my feet before getting out.