You pressed your sweaty back into the trunk of a tree, the warm air and lust smoothing out any coherent thoughts save for the flesh. Your erection felt harder than it had ever felt - like steal, or wood or... Your thoughts failed you as a pleasant, twisting sensation rippled from your slightly green cock. It was so hard that it was almost pressing up against your flat abdomen. It was thick and popping with veins that gleamed under a coat of sweat and filth.
Gritting your teeth, the odor of your own flesh chipping away at your will. The smell of skin, reminding you of your own strangely exciting and exposed nakedness, brought to mind the satyr and his mouth. His lips against your member and the blowjob of a lifetime. Your eyes went wide and you let out a guttural moan as a pleasure greater than words erupted from out your burning loins and up though your body. You gained enough clarity to realize you were jacking yourself off too weak to resist the Forest's Curse.
You began to drool from the pleasures, quickly collapsing onto your knees as you pounded away. Your legs clumsily squrmed as your cock became greener, thicker and at least three inches longer. Your pubic hair grew denser in return, your nipples itching as they began developing a sight, greenish hue. Your hair grew darker too, shifting into a dark, night black. As his happened, you felt a slight itch from the middle of your chest, but saw nothing yet. However on your legs you noticed small amounts of dark hairs growing into palace, until a new sensation washed over your flesh and captured your senses. You body tensed and boiled as you found your musculature growing denser and clearer - across your fine, lean form developed small and light but clear muscles. Two canines on your lower jaw ached only slightly as they grew thicker and longer. With your mouth closed, it would be unnoticed. But with your jaw open wide, and even if you smiled, you new sharker canines would be clear as day.
You groaned, your body currently settling into something that belonged to a runner, or a lean pole jumper. You began to grin and perhaps because of the curse (you wondered, but the pleasure was too great to care) you were excited. It was smaller than the Greek Gods of old, yes. But it was defined, boyish even. You armpit hair grew thicker and became odors with the smell of sweat and an athletic lifestyle. One of your hands gripped the Earth whilst your free hand continued to pound away, a small part of you still resisting the pleasure. But again the Curse worked its will onto you as your forearms grew a lightly covered by dark hairs, another flash of pleasure collapsed upon you.
You didn't know how long the pleasure took, but eventfully you came and covered a patch of earth in your spunk. You rolled onto your back and attempted to catch your breath. As your senses settled you sat up and despite knowing what had happened, you were shocked to see you changed body. Running a hand up its lean, but incredibly dense, flesh you felt a mixture of fear and excitement. This body, despite it's green rod, was something you suddenly desired to keep. And yet that same rational, human, part knew that a greater change would follow if you gave into the flesh.
It was then your cock became semi hard, already reignited by thoughts of your own form and by proxy, sex. A rustling behind you caused you to spin clumsily to your feet and make a stand as...