The two men threw Joan into the truck, and she landed on her back, her cock lying flaccid between her legs on the cold floor of the truck. The pheromones in the truck was overpowering, and as Joan sat up she saw four nanny goats, and a couple of baby goats in the pale light coming through the ceiling of the truck. As he sat there a few goats walked slowly over and sniffed or nibbled at her engorged nipples and crotch. One nanny goat came and sniffed at her goat cock and she felt her male goat member rise to the occassion. "No, this is absolutely disgusting... I must fight this urge to mate!" she pleaded.
The nanny dipped her head between Joan's legs and started to obediently lick and nibble at her cock, Joan got so hard she thought she'd bust. Joan quickly got up and stepped back into the wall of the truck, as she saw her proud 16 inch goat hard stick out straight in front of her, precum dripping onto the floor. The nanny saw this and turned to Joan, offering her rear. "Nooooooooooo!" Joan bleated, as once again her goatish instincts took over. The move was swift and in, Joan thrust hard as the Nanny backed into her, and soon Joan shot her huge load into the goat. The pleasure was mutual, Joan felt a very animal-like orgasm. "Wow," she said out loud as she pulled out her glistening, lubricated member. Joan felt a tingle on her arms and legs as a thin layer of fuzz appeared and she sighed, her heart racing a million miles a second. Joan rubbed her butt. Her rear had definitely become larger-- almost the size of a mare's, rounded, curved, and heartshaped, having both of her buttcheeks slapped by her excitable goat's tail.
Joan felt something furry touch her stomach as she looked in front of her, only to see another nanny stepping up for her turn. The pleasure and animal instinct became too great as she thrust blindly into the nanny's ass as she bleated. First Joan screwed her in her moist goathole and pulled out as she turned her attention to her asshole, and thrust in and out of the nanny with all of her strength. Joan had to stand on her toes just so she could slide her cock in and out of the waiting goat. Joan leaned and pushed her tits into the back of the Nanny as milk started to flow freely from her engorged nipples, soaking the nanny's backside then running down Joan's leg onto the floor of the truck. Joan felt herself bleat in sync with the nanny as she pumped out, then thrust in as hard as she could, and then came. Joan fell back onto her pillowy ass, once again disgusted at the act she had just committed, and collapsed from exhaustion.
When Joan awoke, there were two baby goats sucking milk from her breasts, only now instead of having two big breasts she had four. She threw her head back, feeling the pleasure of having her breasts drained became too much, and screamed as she felt her goat dick erupt again as she bucked her hips. Suddenly, the door opened.