Jennifer, satisfied that her tits had been drained enough for now, re-positioned herself to fuck the needy woman when she felt herself transforming in a familiar way. A sudden desire for horse cock flooded her being and this time she welcomed the twisted desires.
"What the *hell* are you?" screamed the farmer. She watched in terror as Jennifer become half-beast and submitted willingly to the powerful figure of her bipedal prized stallion.
"A slut!" shouted Jennifer with pure joy. She couldn't deny what she was becoming and found that she no longer wanted to.
Jennifer looked over her shoulder at the anthro stallion fucking her. "Transform or Dare?"
The stallion didn't respond. He couldn't, his mind not transformed enough to comprehend beyond fucking what he currently considered to be his perfect mate.
"For your transformation, what you are now is your normal state except your intelligence is much more human and you have the ability to fuck several times an hour without getting tired or producing any less cum. For your dare, I dare you to pass the curse on to our mutual friend here!"
The eyes of the horse man became distinctly more human. He looked straight at the terrified farmer and then spoke in a deep voice.
"Transform or Dare?"
"How, how is this possible?" the farmer stuttered, "I thought it was just a legend."
"Hahahaha! That is not an answer so you get both! For your transformation you shall develop the sexual traits of a mare with an insatiable desire for sexual pleasure. You will produce milk capable of transforming other women into slutty anthro mares like yourself and puny men into well hung anthro stallions with highly addictive cum. For your dare, I dare you to pass the curse back to the slut who made me!"
The farmer screamed with pleasure as her body transformed into a creature of pure lust. Her cunt swelled, blackened and gushed its juices over the tip of Jennifer's waiting horse cock. The new mare cunt sucked the meaty tool into its depths and both of the women cried out with pleasure. Her nipples darkened as her tits swelled even more and thoughts of endless, beastial sex bombarded the farmer's mind.
"Transform or Dare?" The words escaped the farmer's mouth without her consent.
"Dare!" said Jennifer. She was eager to discover what perverted sex act the new slut would make her do.
"Fine!" The farmer still felt her anger from before but she struggled to focus when all she could think about was how good it felt to be fucked by a thick, flare-tipped cock. She wanted to punish the slut for condemning her to a life of pleasure, but thinking of that pleasure only made her realise that one of her erogenous zones was being unacceptably unattended.
"I dare you to suck my tainted milk and become my slutty equine sister forever!" shouted the farmer before she even knew that the words were coming out of her mouth. Damn! She could have used the dare to fix things if she had just not been so obsessed with the intoxicating smell of their beastial rutting.
Jennifer firmly latched on to one of the farmer's milky tits and sucked with enthusiasm. The farmer screamed as another orgasm eroded her will further. Jennifer's horse-like form became more and more permanent with every greedy gulp and her milk gained the further corruptive traits of her new slut-sister and her cum was becoming more addictive than any drug as the farmer was about to discover.