Primal Instinct

Their voices ring hollow in your mind as your thoughts drive you toward one goal. You stare at her, panting hard as your body tenses. Then there's a sudden lash of pain throughout as you feel your muscles racked with tension. You find your naked self in a semi-fetal position on the floor with your heart beating rapidly. Thoughts are racing through your mind that you never would have imagined to be there. Your raging libido is devolving your mentality into that of an animal. You want. You desire. You crave something. To mate. To have sex. To fuck. To plunge that cock deep inside a wet pussy over and over again. But no, that is not all you want. You want to breed.

"I believe I have something which might reverse or at least slow the symptoms." Dr. Lybeck states as she reaches into a nearby refrigerator.

Your senses sharpen at her words. "NO!" you snarl as you run at Dr. Lybeck and before she knows what is happening, you smack the vial out of the doctor's hand with such **** that it shatters against the wall.

She backs away from you until she can go no further, her ass pressing against the cabinets. "Please calm down John." Her eyes darting about, seeming to search for some way to escape as you slowly move towards her, your throbbing penis pointing directly at her. "That was the last vial of antidote that I had." She states as she glances down at your large prick, "I, I only want to help you." Her pleading hands outstretched.

"You!" You snarl while grabbing at her wrists. "Want you!"

The animal presence takes over as you pin her arms against the cabinets. You bite and suckle hard on her neck, forcing your groin against hers. The doctor doesn't seem to fight you, perhaps she thinks that the human will be able to take over again if the animal wears itself out. Nevertheless you continue, as you move one hand down to pull her tight skirt up to her hips. Her white lace panties exposed, you press your cock hard against her pubic mound, feeling that soft lace against your dick. The pleasure courses through your body as you do, and you yank her panties to the side as she gasps. Your sensitive nose can smell her pussy, wet and dripping even at this moment, ready for you.

"John, no!" Sam cries out. But she's unable to move, caught up in the shock of seeing this pornographic scene before her.

"Just," the doctor gasps, "Just stay back Samantha." She screams. "Once he's done, it should be over." Her breath, panting.

You snarl as you grab her hips, lifting her with a strength you never knew you had. You pull her legs apart and thrust as you impale her with your cock. She moans along with you as you feel this sudden heat enveloping your rod. "YES!" You scream out in a guttural yell. Your hips impulsively thrusting deeper, taking over as you grab hold of her body, forcing her back against the counter top. Driving your dick into her, over and over you pound her pussy, fucking her furiously. Carnal pleasure fills your being. Your body unaware of the physical strain only knowing the need to continue. To fuck, to mate, to breed. Your breath, labored and loud, you can barely hear the moans of the doctor over the sloppy wet sound of your dick slapping against her cunt, again and again. This mounting pleasure building somewhere deep within as you speed up, faster, harder. More and more you pound her pussy, again, and again, and again. Knowing nothing more than the need to continue, to reach that ultimate climax. Your pelvis incessantly beating against hers until finally your body howls as this enormous explosion of self indulgent pleasure overwhelms you. You tense up as your cock spurts and you can feel that sudden release! Again and again, your cum shoots forth spraying inside her, filling her with your seed. Each time causing a spasm of delight throughout your body until she's overflowing with your cum as it drips down the two of you.

You sigh in perfect contentment as your body relaxes. Withdrawing from her wet sleeve you back away, a smile of satisfaction drawn upon your face. The doctor's disheveled body slumps to the counter top as she lays there panting. Cum trickles from her creampie trailing its way down her thigh to drip to the floor. Her eyes somewhat glazed as she stares at you. She weakly lifts a finger as if to say something but stops short, exhausted.

You look down to your prick, still somewhat swollen but hanging more at ease as it glistens in the light. Astonished at your own actions, the physical sensations, the overwhelming orgasmic pleasure, and somewhere deep within you, there's a voice saying you should be ashamed at your lack of control, but that voice is miles away. The curled lip of a smile still plastered upon your beastly face, you look up to see Sam.

She stares at you in shock. "Uh, John?"