inside the tight ring of muscle designed to keep aliens out. It does not do a good job. I find myself almost immediately spreading around him, the slightly rough sensation of his hard finger increasing the sensation which is already intense.
More lubricant is added, making his finger slip deeper and easier. And then even more lubricant follows, until I am drenched not only in alien lube, but also my own juices which are beginning to flow of their own accord, as if my pussy is trying to tempt his attention back to that slick channel. My body is at sexual war with itself, and I am both winning and losing.
“How is this medical?” I whimper the question, trying not to pant my desire shamelessly.
“I am preparing you for the medical part,” John says, slipping a second thick finger inside me, making me spread wider, training my ass. I must be perverted to be enjoying this. He helps me by letting his thumb drift along the seam of my sex and press against the sensitive bud of my clit.
I do not know how this is medical, but I’ll take it.
“You’re ready for the probe,” John declares, withdrawing his fingers slowly. He replaces them with something thick and long, much more so than his fingers, closer in size to his cock. I grunt softly as he presses the rounded head of it against my ass.
“It’s big,” I moan.
“You can take it,” he encourages me. “Relax and breathe, my pet. There you go…”
The tip of the device slips inside me, past the once-resistant ring of muscle and starts to fill me. Slowly but surely he goes deeper and I feel the tingling effects of the stretching all the way to my toes until finally the probe is seated inside me, measuring the heat emerging from the walls of my rectum. It’s such a mechanical, scientific thing, and yet there is something sensual about it. Perhaps it is the way he is holding me in place, one hand on my cheek, his fingers wrapped about the probe.
“I’m going to move this in and out of you,” he tells me. “Try to stay still and breathe.”
One of those things I can do easily. The other is almost impossible. I gasp and whimper as he starts to slide the probe in and out of me slowly at first, and then with increasing speed. He adds lubricant with every stroke until the thick probe is sliding back and forth, in and out of me, with a steady rhythm.
“Good girl. Very good girl,” he encourages me. “Just lie there and take it. Let your tight little ass have this.”
“Mnnghhh…” I whimper back without much in the way of coherency. “What is this medical procedure?”
“Oh,” John says, leaning down over me, his massive bulk and powerful musculature pressed against my soft skin. “This is the part of the medical exam where I determine how much my human pet likes to have her ass fucked. Also, it takes your temperature and determines the health of your inner gut flora, but it’s mostly about taking this tight ass.”
His ownership is just as carnal and twisted as every owner before him, but it is different, because he is making sure that I enjoy this as much as he does. Nobody ever cared what I felt before. I was nothing more than a meat puppet to be filled and emptied at will.
John is stroking my clit with every stroke, rubbing and teasing my pussy as he thrusts the probe with ever swifter strokes. My toes curl, my breath comes in shorter, more desperate gasps, and every part of me is flooded with pleasure.
I’m going to come. The probe is moving back and forth with that filthy repetition which has no medical excuse but which leaves me panting, especially when his fingers drift down and dance over the soft lower petals of my sex, teasing me until he finds my lust drenched clit which he pinches and rolls ever so lightly.
In this state of perfect arousal, there is no doubt that I am his. I am his little toy, his fuck-pet. I am his owned human. I am everything he wants me to be.
“Fuucckkk!” I curse as orgasm rips through my body, making my ass grip the probe tight, my hips buck, my entire body convulse as I turn on my side and thrust my hands down toward my sex.
“Ohhh oohhh ohhh…”
He’s still moving the probe, one big hand on my thigh, the other