This is a work of fiction. Any resemblance between the characters and real individuals is coincidence. All characters are over age eighteen.
A mad mature scientist continues her experiments...
***
The following Wednesday, Professor Allenton texted:
"How do u feel about having my lab assistant come over 2. I think she could add a whole new dimension to our next exp."
"So I won't have you to myself. :-( You may have to force it on me."
"Consider it done."
When Professor Allenton let me in the door that evening, she held me and kissed me for several moments. We wanted each other right there, but, "Sienna will arrive any time, so we'll have to hold off a while."
"So what is Sienna's role in tonight's experiment?"
"Well, Sienna is just as committed as I am to promoting healthier sex lives for all. It's our way of making the world a better place. Oh, and by the way, we don't see anything wrong with enjoying our work along the way. I guess some people feel that science should be boring and unenjoyable. We feel it should be exciting. Sienna's role is to help out in any way she can. And..." Professor Allenton gently grabbed me by the elbows, "she's pretty hot and an active participant in the research."
I gulped and smiled.
Professor Allenton was right about Sienna. She was at least five foot ten, statuesque, about thirty I guessed, and had long dusty hair and an athletic build. She smiled at me right away. There was an awkward moment when I went to shake her hand and she came in for a hug. "I'm so happy to meet you," Sienna said, "and I'm thankful you're helping Professor Allenton to continue her research."
"Oh, no need to thank me. The pleasure is all mine."
She laughed with a twinkle in her eye as she stroked my forearm and squeezed my hand.
"On that note," Professor Allenton said, "Let's get started."
While Professor Allenton set up the equipment, Sienna seemed eager to help me undress. When my already hardening cock popped out of my underwear, she said, "Looks like we're ready for some science." A moment later, she rolled a contraption, covered with a black cloth, to a position in front of me. She looked at me and saw the terror in my eyes. "Oh, no need to worry," she said beaming into my eyes. "Believe me, it won't hurt."
When everything was ready, Professor Allenton said, "We can't tell you how this experiment works. It might bias the results. But I can tell you it features...drumroll...Sienna and I." Professor Allenton looked down at my cock. "Well, no need to ask if you're ready."
Professor Allenton and Sienna then stood in front of each other at the foot of the bed. Sienna was young and tall; the professor was older and stacked. Both were gorgeous. I had expected them to strip in front of me, but no, they kissed! Then they smiled at each other and kissed again. "We haven't...um...worked together like this in a while," the professor explained.
"Too long," Sienna said, pulling the professor close. A second later and they were kissing passionately and holding each other. Their breathing rate gradually increased and brought soft moans with it.
Then they parted a little, and Sienna began to take off her black leather jacket. Professor Allenton helped Sienna pull the heavy garment off as she looked up through her eyelids and smiled broadly. Sienna was smiling too and threw her hair around to expose her neck and amber earing in my direction. Sienna then ran her fingers through Professor Allenton's hair, kissed her, then reached for the top button of the professor's blouse.
All this time, my cock remained erect but now I felt the yearning sensation and the powerlessness of being tied down. It was the only part of me that could actually respond, except of course for my increased heartbeat and breathing.
Sienna stood with one ass cheek pointed out toward me. I don't think that was by accident. Sienna knew she was beautiful and knew too that I'd love seeing her exposed neck and her fine butt cheek. She helped Professor Allenton remove her white blouse to reveal a cream colored bra that stood out against her tan skin.
Professor Allenton then grasped the bottom of Sienna's sweater and pulled it over her head, careful to not snag her earing. As Sienna raised her arms to free herself from the sweater, the professor seized the opportunity to kiss one of Sienna's breasts. Sienna moaned softly, then grabbed Professor Allenton as they both knelt on the bed and then fell on it, entangled in each other's arms, kissing and nibbling. Moments later, Sienna pulled down Professor Allenton's bra and was sucking her nipples. "Aahhhh," Professor Allenton cried. "Mmmmmm...oooh, let me..."
Professor Allenton worked on Sienna's bra while Sienna went for the zipper holding the professor's skirt in place. These two beautiful women were grabbing and touching each other excitedly. Clothing came off only when it got in the way of fingers and hands and tongues and lips.
After an intense few minutes, they both rose from the bed. While Professor Allenton went to the table to do something on the laptop, Sienna came toward me and pulled the cloth from the mysterious contraption that stood about waist level. It had an arm on it with a rubbery tube at the end, a piston, and wires running here and there.
I stared, unsure what to make of it.
Professor Allenton connected the wires to the laptop while Sienna grabbed a bottle of lube and squirted it all over my dick and more into the tube.
"Oh, what...?" I said.