Red slides down and hurridly undoes your pants and slides them off. You both lay in the hay and she hovers over you. You don't care anymore now. Your mind is changing and all you want is sex. The passion has completely transformed your mind and your body is almost finished in following as you feel a tail emerge just above your butt.
"I want you inside me!" Red says seductively and proceeds to positon your goatish cock inside you.
It feels great. Your new penis is much more sensitve for pleasure and you can't stop yourself. You immediately role over and take control of the situaition. And proceed to pleasure Red for your own self. Your waist finnally crushes and suddenly you realize that you can no longer stand on your hind legs.
"No... wait," Red tries to make you stop but it's hard. She pushes you off her for only a momment as she gets on her hands and knees and offers her nice pussy for you for easier access.
Unable to control your actions you pounce Red hurriedly and shove your cock into the first hole you find, which for Red is the wrong hole.
"AH! Wait not, there...." Red tries to stop you but it's useless. Your body is way to heavy for her to remove herself from her position. Her arms collapes as she takes it from behind she moans and screams in pain and pleasure.
Thats when she notices the hair on her arms. She looked up and saw the white hair forming across her arms and then laid her head down thinking nothing of it when she scrapped her new horns on the floor. She looked up and layed her arm across her head and felt tiny horns emerging from her temples. She screamed an inhuman bleat that sounded more like a bray as she realized that giving into her own lust set off her transformation.
She straightened up with new found strength back on all fours. She slamed her fist down into the hay and saw that they resembled hooves. "NO! Stop Lee! Stop it! I can transform us back...baaaaaaaa.....baaaaaaaaaa it will........AAhhhhhh ohhhhhhh......AH! STOP Please don't stop!" are Red's finnal words as her mind begins to fade into animal instincts. Her tail emerges from her rump signifying her change from human to beast.
She cried until she lost consiousness the last thing she saw was the magnificient white hair completely covering her body and her new found hooves.