You have done a pretty good job getting the fist seven inches in your throat, but now you are hesitating. Your mind is telling you that breathing is more important than servicing cock. So I am going to punch the last three inches into you hard and fast. It will feel good, trust me. And in this position, my legs will hold your head in place and prevent struggling. I am doing this for your own good. Training you to be the best you can be.
Its important to remember that you are the guy taking dick, your needs are far less important than mine. Your job is to make me feel good and to swallow. We will practice this often, until it becomes second nature for you. By the end of the semester you will be able to deep throat me with no hesitation. Then you will be able to proudly say “I am a cocksucker” to any man you meet.