As she was masturbating and crying she hadn't payed attention to where she was. She was stuck next to a large field, and in the field were several horses, all of them male. A herd of bachelors looking for some pussy, there were eight of them. They started coming over when she had cum for the fourth time, she looked up and screamed "No! Not again!" She struggled against her elephant penis, exposing her pussy, it hadn't been replaced, only hidden.
They rounded behind her, their eight heads shoving into her pussy all at once, she screamed in horror when she realized that they would all go in at once. The had reached their bellies, Jen screaming in horror when she saw that her hips were spread by at least ten feet, she couldn't move, but could see them going in. They had finally slid in completely and disappeared. She felt strange, she saw that her legs were getting thicker, and a second pair grow in, then a third, she realized that she was growing bodies for the horses.
Writhing she screamed as her body shifted, being pushed forward as she grew two full length bodies of horses in place of her legs, her face elongated and changed into a horses head, ending in an elephant's trunk. Then she felt her penis, which she had only gotten earlier start to tingle, it was getting bigger, and she was growing two more. The elephant penis came into view as it shot out toward fifteen feet. She screamed, not this, but it got worse when she felt two horse cocks slide through immobilizing her as they grew within two feet of her first penis, her balls expanded larger and larger until they had reached the size of VW beetles. She kicked her back legs striking her balls and making all three of her cocks to cum at once.
Now she was a monster, and all she could do was masturbate.