What you understand is probably that guy is die. And you don't want to die, even more if you die becoming cum.
“I won't to be a prey. Please, help me. I don't know how to cockvore, but I don't want to die like this!” You scream, shaking Jack.
“Ok, ok, calm yourself! I'll help you, I promise, but if you can't cockvore, and you're here just to be a meal, I will not be able to help you. You know, it's a blessing, and not everyone can have it. Trust me, I've already known who will be our prey. Strip now, it's important.” And saying this, he leave, going to the cafeteria. During the trip, Jack says rules which you didn't even know the existence. In fact he says that you can't vore more than two people per day, in order to not lose too much students. Whispering, he adds that no one follow this rule, because it's hard to be seeing from the same supervisor, but he also warns a lot of people is being vored because of this rule. The other main norm is that your school grades are really important, because, they're the base of your “school points”. “School points” are points that are assigned to students by a computer, and this ones rule your lifestyle. An high point means better food, bigger room, and more money to spend when you go to the mall there's in the perimeter of the school. But these are just a few of the benefits you are entitled to a good score.
When you arrive in cafeteria, Jack approaches a little group of perfect guys, and starts to speak with the bigger one, who starts to sneer looking at you. You don't care and still trust Jack or you run away, fearing a betrayal?