On paper the internship had sounded incredible: a chance to get hands on experience with cutting edge technology in a state of the art testing facility. It was every engineering student's dream --

But I'd never imagined it would be like this.

I gasped and arched against the metal restraints confining me to the cold examination chair as you slowly turned the dial on the pad linked to the toy slowly thrusting inside me.

My teeth dug into my lip as I fought to hold back a whimper, the feeling of the toy getting even cooler making me want to cry and beg for reprieve.

But I knew better now. Fifteen minutes - no more, no less.

You'd reminded me plenty of times that I'd signed up for a full day with the R&D team, and given my consent on three separate forms to assist in four trials every hour so that the team could show the government that their products had passed exhaustive human testing.

And exhausting it was.

You didn't care how many times I came, how desperately I was trembling, or how often I begged for a break. In fact, if anything you seemed to enjoy when I cried out and spasmed around the toy you were moving inside me.

And every time I did, you made it go a little faster, or deeper, or harder. Sometimes it would start vibrating in a new pattern of waves, sometimes it would expand, sometimes it would twist inside me like a drill, making me scream.

Something always changed, but the one thing that remained constant was that whatever was happening only increased in intensity until I came.

I sobbed as I saw your fingers twitch on the dial again, making the toy even colder. It pushed deep inside my hot soaking depths, the icy touch of its tips sending spasms of pain / pleasure shooting through my core.

"Pl-pleeease! No more, change it, please!" I begged breathlessly.

"You know the terms of the agreement. Fifteen minutes for each trial. You still have 9 to go on this one, and unless you orgasm, we'll just have to keep trying to figure out what temperature makes girls like you cum..."

If my mind was able to focus, I may have seen the little smirk tweak your lips. As it was, I could feel myself finally cresting the edge of ecstasy, eyes rolling back in my head as my body finally caved in to the icy touch buzzing so deep inside me, dousing it in molten juices as I clenched and came for what felt like the millionth time since I'd been shackled to this chair.

~~~

If you liked, please feel free to pick up where it left off! Love long responses (3-6 paragraphs or so) that give me something juicy to reply to. Please be as creative as you like, introduce new toys of your own invention, take control of my character to move the plot forward if you have to. I want to explore a bunch of kinky things with this one. Hope you do too! 😊