Todd heard the voice of his sister Ann. She was an older sister by three years and rather well endowed. The sexual desire coupled with the sensual feel of his new body caught Todd off guard.
Ready to jump out and stand in front of his lusty sister he felt himself getting a rageing hard. At first the fat pink head poked out past the rich brown curly sheath hair. Then more of the shaft moved out into the light. Almost four inches round at the base, the member stretched out a good sixteen inches in front of him.
Even without a thought his right hand grabbed the aching shaft and began to stroke it's length. The wild sexual desire pulsed into his mind blotting out all human sense and only increasing the animal lust.
Suddenly he looked up as he heard the shower door open and close, she was naked he thought. The mental picture was too much as he spurted out his load all over the closet door and mirror.
Some wild inner need told him not to waste his own sperm and he began to lick it off the door and mirror. The rich taste of his own cum gave new feelings of added strength. In seconds his horns sprouted and additional six inches as his curly brown hair covered even more of his belly and chest.
Stepping back to the door he opened it and clomped out into the hall. His pointed ear against the bathroom door gave a good listen to Ann sweet voice singing as she washed. Again his goat cock began it's climb out into the daylight.
Turning Todd clomped back to his room with his swaying cock aching for another release.