I knew you'd be a horny perv when I married your step-dad, but I didn't think it was this bad. While you were out with friends, I went through your room. I found your huge porn collection! Is this what you've been doing instead of studying for your exams? In my house, porn will not stand. You will learn to get ahold of your urges, through chastity! I am locking up your cock for the next month. You will be unlocked, by me for 5 minutes every week to properly wash yourself. If you even try to jerk off in front of me, I will put you in a smaller cage. This metal chastity cage will help you. You will be able to study now that your hands and mind aren't occupied with your cock. Now go study! You have a test tomorrow!