Midterms are starting up for many students. Actually, if you’re in all the science classes that don’t understand it is impossible to have more than one midtermmidterms have started up for many students. So there will be plenty of student-teacher email exchanges about missing classes, studying for the test, and other forms of electronic begging. 

Just make sure your email does not end up on this forum, a long running-thread on the Chronicle for of Higher Education‘s website of professor’s “favorite” student emails. Equally impressive to the hilariously pompous and/or illiterate requests from students are the really angry prof reactions that show that professors are just as bitter and cyncial as you are during midterms.