I had always wanted to be a strong, athletic jock. I thought of the guys I had seen on the football team at school, how they were always so perfectly muscled and strong.
As I was thinking about it and rubbing my cum on my abs, I felt my hand begin to shake. I suddenly felt the undesirable urge to flex my hand into a fist, as tight as I could.
I squeezed both my fists closed, watching my forearms tense up, and was surprised to find my fingers wouldn't uncurl. I just kept squeezing harder, and my arms started to tingle and feel warm.
Now it started to feel great, as I watched and felt my forearms harden up, becoming perfect for the strong grip I needed to throw and catch a football.
I looked at my new jock forearms, and wished that I could touch them. My hands stopped clenching then, I felt with relief. It was almost as though they had a mind of their own as I ran my strong jock hands over my arms, up to my biceps, which then started tensing up by themselves too.
The feeling was amazing, I could feel my muscles building and toning as I watched my biceps grow, loving the feel of the muscle squeezing together when I flexed them.
My hands were rubbing my biceps when I felt like my shoulders were being pulled in opposite directions. It's a wonderful stretching sensation, and my body pushes outwards to either side, as I know that my new shoulders will give me that perfect V-shape. With my wide jock shoulders, I feel so powerful and confident, and I start to think that my hormones must be changing too.
With growing pleasure I feel by chest and back tighten at the same time, and run my hands over my nipples and pecs as I feel them harden and push outwards too, bringing me ever closer to that hot jock body that I had dreamt about so many times.
I knew that my abs would be next, and I felt my stomach pull inwards, then flex outwards, giving me my nice hard six pack and a belly button that was almost flat.
I couldn't believe how amazing this felt as my hands traced their way around my rippling stomach, down to where I knew the next changes were going to happen.
Or, I thought I knew, as I felt my ass flex and tighten, staying in place. This felt so amazing, it was like every time I flexed a muscle on my body it would stay in place and grow harder, with a tingling feeling. My thighs felt amazingly powerful, and I knew as my calves inflated with tension that I was going to love being a jock.
I almost fell down on the floor as I lost my balance for a second while my feet stretched longer, and my ankles became more powerful, allowing them to support the bulk of my new body.
I felt so powerful and leaped up to look at myself in the mirror, realizing that only one part I could see hadn't changed yet.
My hands started moving on their own again, but I wasn't resisting for sure, as they made their way slowly down to my cock, which now looked a little disproportionate in comparison to my athletic body.
I was overcome by the pleasure as I started stroking my own cock, jacking off again, and rubbing my balls. Then I knew that the changes were almost over. I felt the same feeling in my cock, and I watched it lengthen to accompany my balls, which grew almost to the size of my new fist.
This feels unreal, I thought: I really feel like a jock, flexing my bulging muscles in front of the mirror. I look down past my pecs and abs, seeing my hot jock cock sticking out in front of me, and when I look back up I see a different face looking back at me. Short cut spiked blond hair, sparkling green eyes, with a strong jaw and perfect smile. I smiled at my reflection and suddenly was overcome with a wave of new sensations.
I felt my balls producing the hormones needed to keep me this size, and I could feel them pulsing through my body and brain. It was powerful stuff, I thought, I was even starting to think like a jock. I looked at my hot body in the mirror, stroking my cock and muscles as I started to become almost dizzy. My head felt all fuzzy, like things were different, and I realized this was just part of the change too. Really, it felt so natural to me. I started thinking more about sports, and how we were going to smash that rival team tomorrow at the game. "Wait a minute," I thought with a start, "I'm not on the football team." But I felt a rush from my body, and I knew that I was a football player. I looked at myself in the mirror. I sure looked like a football player, I thought, so I must be. As a matter of fact, I loved football - it kept me in such great shape. I lay back again, jacking my cock harder and harder, relishing in the strong jock sensations my new body was pumping into my mind, as I let any thoughts of my old body and life fade away, totally embracing the jock that I was. When I exploded I felt every muscle in my body flex, and I couldn't wait to put it to use on some of my hot jock friends.