The stroking sends waves of pleasure through your body, and you quickly find yourself closing your eyes before grabbing it with both hands and massaging vigorously. You know that you should resist, but with each passing second your mind gets foggier and foggier while your self-control decreased to the point where you have none. Your body is feeling very itchy and warmer and warmer but you don't care, all you care about is the pleasure and getting more of it. Your ears feel itchy and you could swear their getting longer. Your face aches and seems to get longer. You could swear that you’re getting taller. Your hands feel stiffer and stiffer until only hooves seem to be pleasuring you. But still, you don't care, you want more and you want it now. You let out a sound that could only be described as a bray, and oddly instead of alarming you, it only increases your arousal.
A single bray soon turns into a series of brays. You feel a stirring and building of pressure in your member and know what coming. You try to stand up, but find yourself forced onto all fours. You open your eyes to try to figure out what is going on. Your vision has changed. Even as you feel yourself getting closer and closer to peaking, you try to look yourself over. As you orgasm, a final seemingly unrelated strange feeling overwhelms the area. You watch as best as you can and see a sheath forming around your member. As you finally climax, you let out a loud chorus of brays in response to the intense ecstasy.
When he feeling dies now, you watch you member shrink into it's new sheath and realize in horror what you have done. Your loss of self-control has cost you your humanity, you don't need someone to tell you what you have become, the brays give it away. But it doesn't end there. Your loss of control has cost you something far more valuable, far more precious, your mind. You feel years of acquired knowledge draining from your mind, intelligence thought go foggy to the point where even basic thought becomes difficult. Human memories start to drain from you until you have only vague recollections of being human. You know what you have lost and to your horror, you don't care. The beast hormones start to fire up and lust begins to take over. You hear someone coming; it's the woman. She looked at you and smiles. As she strokes the fur on your back, she comments "a total loss of self control, which means total loss of human intelligence and near total loss of human thought and memory. Such a shame too you would have made a fine companion.” You try to make sense of her comments, knowing that her words should mean something to you but somehow, they all seem to be a blur. When a man walks up beside her, she talks to him. "Just another one who lose control to the beast and now he has become one in body and mind. I'm afraid he's only good for breeding now,” she says. You understand the word breeding and let out a quiet contended bray as your member unsheathes at the thought of the word. The man looks at you, seeing your reaction. "Very well, I'll take him to the stables" he says as he leads you to your fate.