She was modified years ago; we have by now improved our methods. Tell us, why are you here?The girl looked at Dr. Grace almost hungrily.Because you made me.And what did we do?You gave me the gift to cum from pain alone.Dr. Grace turned to Sarah.Unfortunately this little one cums now from any pain. We could never let her out.She turned to the girl again.Why is it we could never let you out?Because I’d hurt myself to cum.That’s the problem. The bigger the pain, the bigger the orgasm. We found her trying to break her own fingers to cum and worse. So we made a deal. She’d stay like this and we’d let her cum routinely. Of course she needs to be restrained or else she’d cum all day and thus killing herself in no time. Of course she still has ways to make herself cum even now. All she does is to flex her muscles so long and hard until they cramp. You just aren’t a good girl, are you? All the modification we put into her didn’t override her original programming.As proof Dr. Grace picked up a. "Yes, god, I would love that!" I hadn’t had a lot of experience with anal sex but times I’d had a cock inside me I had loved it! He took a condom from his pocket and slipped it over his hard cock. He stepped behind me and I felt him lube up my ass.I stepped out of one shoe and pulled my foot out of the leg of my jeans so I could put one foot on the chair. I'm very tight and this would let him get his cock into me easier, and deeper! He pushed against me until he found his mark and then I braced myself as he pushed into me. First just the head...I let myself relax...then a little deeper...I relaxed a little more and drank in the sensations as he penetrated deeper. Then he grabbed my naked hips and PUSHED!His cock went deep into me and I could feel his balls against mine. He started moving back and forth, holding my hips and groaning with each thrust. He reached around me and handed me the tube of lube. "Lube your cock up, too," he told me. I didn't know why but complied. My erection.
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