I'm a Huge Dork

I totally went to the wrong class today. Well, not really the wrong class. But I thought my Wednesday class was today, so when the professor walked into the room (luckily they are both in the same classroom!) I totally thought she was the TA b/c I know my other class is taught by a male professor. So, I'm sitting there thinking she's the TA, and then all of a sudden she started handing out syllabi and talking like she was the teacher. Which she was. Oops. I totally brought all the wrong books which didn't turn out to be a big deal, but I still felt like a huge idiot!