I like strict-ish teachers who allow a bit of fun and flexibility every now and then. For jokes, So long as it's relevant to the topic at hand, then I think it should be allowed. I like the teachers who don't tolerate any form of delinquency, such as having side conversations during class, being on your phone, missing a bunch of classes, not turning work in on time, ect. Those kinds of things irritate me too and I believe they are punishable offenses. Don't mistake this for mean teaching, though, I never want an overly strict teacher who yells at their students and I do believe there are exceptions; things can go wrong. So long as you're responsible, compromises can be made. I also like when teachers give out a decent amount of work - Some classes I feel overwhelmed with too many assignments and others I feel like I'm not learning as much as I should be or flexing my brain enough.