We've been hitting the gym together for awhile now...and I've noticed you checking out my junk through my gym clothes, all the time. I invite you over for a personal training session at my place. You've expressed you want to be able to get in better shape without all the gym equiptment, so I warm you up and get you stretched out. Before I even start the workout I see you staring at my cock. Instead of making it weird I decide we are just going to do this workout naked. I tell you I've noticed you looking and it's all good. You can stare all you want now. I guide you through some at home workouts, jumping jacks, leg lifts, squats...all with my cock out. You can't stop staring at it and my sweat covered muscles. You notice its starting to grow. I'm getting turned on by this sweaty workout and your attention. My cock gets fully hard and I stop the workout to give you what you really want, to watch me jerk off. Stroking my big thick dick I tease you get it right in your face. When I'm about to cum I grab a mug and blow my load into it so you have a post-workout beverage for your ride home. You're welcome!