You love watching my muscles grow. You are positively mesmerized by it. You can hardly control yourself, just stroking for me and my muscles over and over again – watching my flex makes you almost instantly hard. You can’t help but be jealous though, can you? I put on muscle so easily, while no matter how hard you train in the gym you stay the same size, or even get smaller. I’ll let you in on a secret – every time you cum for me, I harvest a little more of your energy, using it to grow bigger and bigger. And the bigger I get, the more you feel compelled to stroke for me, emptying your balls for me, helping me to grow even further. You will not be disappointed.