Blitzkrieg

The last time I was asked to teach the undergrads, I finished the required material in less than twenty minutes (the class was supposed to be for an hour and 15 mts). I do deserve credit for trying to draw out the material for as long as possible. Nevertheless, it was all over in a jiffy. An hour later I get an email from a student that said
" I came to class 15 minutes late and it was empty. Was the class cancelled ? "

No doubt, I will be the most popular professor on campus if I have the audacity to become one.