An old dream of mine was realized in class today: Eating popcorn in lecture. Well, almost. I was teaching and a student had a bag of popcorn with her and when I asked the class if someone wanted to do a certain problem on arc length on the board she answered yes. So I got to eat her popcorn while she worked out the problem on the board. It should be noted that she did the problem very well. And the popcorn was nice too!