I saw what you were doing in your room last night, young man. I know you were jerking off, and I must say that I am so very disappointed in you. You were doing it all wrong! I need to teach you how to stroke like a man, not a little beta bitch. After all, it is my job as your step-mummy to make sure that you become an adequate lover for your future wife and owner. From now on, I will supervise all your masturbation sessions and train you to do it properly. Strip! We'll begin your first lesson now...