You have showed up to CBT class and are surprised to find that you are the only person there besides Me, the instructor. Well, I suppose that is because you are the only one on campus brave enough to attend this class. Oh, you don't know what CBT is? Well, then let's turn this session into a fun game, designed to teach you self control and to get a taste for the pain / pleasure exchange. There are a couple of simple rules, which I will write down for you on the chalkboard. But the main point is that you are to slap your cock & balls each time you feel yourself getting an erection... Trust me, this won't be easy.