Well, at least the professor invited me back next semester- so that's gotta count for something, right? Or maybe, it was the fact that I brought candy? I figured graduate students still like treats, so even if my lecture was boring, at least they had something yummy to snack on.
P.S. In all seriousness though- being a professor is my DREAM JOB. I really love my job, but being back in the classroom reminded me how much I really love school (and what a big nerd I am.)