Suddenly Zack saw his penis become fully erect, and suddenly he had a strong urge to masterbate. However when he reached down his dick immediately shrank into nothing and formed a set of soft lips on his pelvis. Zack started freaking out now as his hips grew muscular and wide, but Zack's urges to masterbate didn't end, but intensified.
Zack then looked down at his feminine clit and stuck two fingers inside of it and moaned with pleasure. It was then something inside of Zack came into contact with his fingers, something solid and smooth. Zack immediately pulled his fingers out and sat down on the floor as he felt an object being pushed out of his clit. As the object grew closer and closer Zack's urges only grew until his clit stretched and pushed out an egg the size of a baseball, and orgasmed.
Zack was shocked and picked up the egg, and he examined it thoroughly. It was then Zack layed another egg, and another until he had six eggs total. Something in Zack's senses then told him that the eggs weren't fertilized and were dormant, and he sighed in relief. But he was still concerned about what was happening, and he was becoming female. Zack then took off his shirt and......