I'm telling you man...Do be foolish on this one. If you threaten a suit, he will more then likely not give you any breaks at all. You already know a lawsuit isn't in the deck of cards. And he'll know it too. Don't pull the lawsuit thing because it can't happen. And then how will you look? Don't give him any more reasons to make things even worse.. Just bite your tongue, get thru the class, and get the grade. Move on. Don't get hung up on stupid people. Because you will run into more of them in your life.. Trust me.