You've been sitting there, stroking at your cock aimlessly, just waiting for someone to tell you to cum. Well, I don't have all day to watch you make a marathon of your masturbation habits. This time you're going to show me how obedient that cock can be and cum in less than 5 minutes. You're going to have to stroke fast, hard, and with a purpose for me. Then, when you spill your load, you're going to thank me properly like the good slut you are. Another little obedience exercise for your cock!