time, time, time see what's become of me

you know what kind of bugs me? when teachers waste classtime. my geography teacher has, in my opinion, completely wasted the last three class sessions. i think it is incredibly rude. when teachers talk off-topic, go off on tangential stories about their own lives (are we going to be tested on this?) i mean, i'm all for learning about the teacher's life and his opinions on random topics, but you know-- i have other things i could be doing. it would be nice if they would write on the syllabus "you don't really have to come to class today, nothing relevant to the course will be discussed"