You have been spending entirely too much time watching porn rather than getting your assignments done. Masturbating is something you need to earn from doing hard work and being a good servant. Now, it's time to punish you for being so self indulgent. You are going to learn to stop thinking with your cock. Chastity is the immediate solution. I know it's new to you. I will have some sympathy and only lock you up for 1 week. If this conditioning doesn't work, then we will have to keep going. You don't get a final jerk before being locked in. Boo hoo. Take your pants off and let's get this cock cage on you.