When I get to the Art History class they have already started, I curse, obfuscated by everything my life is made of, I take a deep breath, I must calm down, once I think I can speak without sending everything to the horn, I knock on the door and Professor Cambell immediately opens it. 

"Miss Cook, do you have a good explanation for interrupting my class?" He asks in his tone of voice that I hate.  

"Yes, it's my class," I reply just as pissed off as he is, "does that explanation seem fair to you?" 

The teacher frowns, "do you interrupt my class to talk to me like that?"...