It's time to start training you, my spoiled little sub. Your cock needs to learn some proper endurance, and fortunately for you I'm an excellent teacher. First of all, remember that any pleasure you derive from this, or any experience, is a happy by-product of my enjoyment. This cock belongs to me, always remember that! Now for today's lesson, I'm going to turn your sensitivity up by taking you to the edge several times, and slapping your dick until it's burning hot. Let's begin!