It had been an unbelievable experience having invisible sex with Kate and Professor Gale. Although to be more accurate the Professor only gave me a hand-job, but still I'm counting that.
The frustrating part came later. I guess I expected the sex to continue but it did not--it came to a screeching halt! I thought afterward Kate and I would have a relationship, but in the following days everything went back to normal. The Professor sat Kate and I down and told me that she had been watching me, she knew I wanted Kate, and thought this would be an interesting experiment. She told me that the whole thing was a set-up, that she and Kate concocted the idea that the Professor was away and they wanted to see if I would use the potion to see Kate naked. Professor Gale explained that she knew the serious implications of how the invisibility potion could be used and she was reluctant to tell anyone about it before she could be sure of it's seductive nature. Sure enough two seconds alone with the stuff and I turned full-blown pervert! She told me the initial day was the actual experiment, but Kate wanted to take it further and show me how it would feel if the tables were turned.
Kate admitted the plan was initially to strip me to my underwear, then let me off the hook, but she got carried away. When I asked the Professor why she cranked me off she blushed a little and said that she also got caught up in the experiment! I can believe this because to the Professor everything is a scientific experiment.
So that was that.
Kate and the Professor apologized, as if that were necessary, and we agreed to continue on with our normal routines. I made sure to tell them if they ever need to experiment on me again I was more than willing! (If only I knew what was to come!)
I can't tell you how horny I was after that. I wanted more than anything in the world to relive that experience.
One day I was sanding down some deck chairs the Professor had and I saw Kate carrying in some specimens to the lab which was located under the deck. I watched her as she walked back and forth to the car; I admired the way her magnificent breasts swayed ever so slightly as she hauled the bags in. I wanted her so bad! I could almost taste her tongue in my mouth, the feeling of her nipples sliding against my back, the feel of her warm fingers gliding up my cock. I immediately had a boner and to my horror just as my hardened dick was pressing against my jeans she noticed me and waved. I waved back and tried to swing around so she wouldn't notice. And that's when I first saw the glimmer in the ocean. I could see something shining in the water and being tumbled in the crashing waves, but I couldn't make out what it was.
I decided a break was in order, I couldn't keep bending over to work on the chairs with a hard-on. Especially since I could see into the lab window and almost look right down Kate's shirt, so I walked down the beach to see what was in the water and try to get my mind off my own perversities.
As I approached the shiny object I was feeling very dejected. I wanted Kate so much and I so desperately wanted to be nude with these two women again!
My boner just would not go down.
I arrived right at the edge of the water and saw it was a strange looking rock. For some reason I felt drawn to it; I had to see it up close. Without even realizing it at first I had gotten too close to the water and a large wave went over my shoes and ice water splashed up my pant leg soaking my testicles! I jumped and let out a loud yell. But I also grabbed the rock and walked back to shore. I walked as fast as I could back to the beach house examining the rock the whole time. My erection had subsided now (finally!) I think due to the coldness of the salt water in my jeans.
"Professor!" I exclaimed upon entering the lab.
"What have you got there?" she asked.
"A weird looking rock that washed up on shore." I handed it to her. She examined it with some curiosity but not much.
"It's interesting. I don't recognize what type of rock it is, but then I'm no geologist. It is extremely lightweight. Perhaps, I'll examine it later." She said as she put it down on the table. Kate bent down to look at it and again I saw her cleavage, which sent a wave of warmth through me. In fact, right through me and into my pants. My boner had begun to return.
Just then the rock cracked open and Kate jumped back. The three of us stood motionless at first watching to see if it did anything else. And it did. The rock fragments seemed to dissolve right there on the table and left a small, slimy, octopus looking creature writhing on the lab table.
"What the hell?" Kate said as she leaned in once again to investigate.
"Stand back, Kate. We don't know what that is." I said, trying to be as cool as a 1950's Sci-fi hero would.
"Some form of cephalopod, I should think." Professor Gale chimed in. She was putting her glasses on and looking as closely at the creature as she felt comfortable. "Seems harmless enough!" said the Professor as she put her finger close to it.
"Professor!" I said stepping forward, "Maybe you shouldn't . . ." but it was too late. The creature wrapped one of its tentacles around her finger. Nothing happened, it didn't attack, it almost seemed friendly as if it were saying Hello!
"I don't think you should touch it until you know what it is." I said.
"The Professor knows what she's doing, Mark." Kate said. "I admit sometimes she jumps in a little haphazardly, but she always gets results." Kate said this and shot me a glance with a sexy little smirk that stirred my penis again. I wanted to walk over and grab her and kiss the shit out of her right there, when I noticed her expression changed. I followed her eyes and they were watching Professor Gale who seemed in a trance. Her cheeks were red and she seemed to be breathing hard.
"Professor?" Kate asked. "Are you . . ."
"I'm fine. I just have the strangest sensation."
I looked down and the tentacled creature almost seemed to be humping the Professor's finger. She pulled her hand away from it and looked at Kate.
"We need to study this creature immediately!" she said and I swear she looked at Kate in a very erotic way. She looked into Kate's eyes the way I do, I even saw her glance down at Kate's breasts!
The Professor's face was very red now and she seemed a little disoriented.
"Professor, maybe you need to get some air?" I suggested.
"Yes, I could use it, it seems very hot in here suddenly." As she wiped her forehead her lab coat opened a little and I could see her erect nipples poking through her blouse!
'What the hell is going on' I thought.
Then the Professor looked at me, hungrily, wantonly, like she did that night. I swear she looked right at my bulge, "You should take your pants off" she said and I almost passed out right there. I looked at Kate and Kate looked at me. "They're all wet and you can catch cold." The Professor added.
"Oh. Yeah, right," was the best response I could come up with as the Professor left the room.
Kate and I stood there looking at each other. Neither one of us wanted to say there was something wrong with the Professor, but we both knew it. All I could picture were her nipples poking through the fabric of her shirt and how she looked at Kate. That, in turn, made me think of Kate and the Professor getting it on and suddenly I was sporting another full-blown erection in my wet jeans.
"It just got bigger!" Kate said and I snapped out of it.
"Huh!"
"The creature, look at it. It's getting bigger!" she said and I moved in close to her to look at it.
There I was standing next to the sexiest woman on the planet looking at a creature that could have come from the vast depths of the ocean or even possibly even deepest space and all I could do was feel the hot burning sexual energy of Kate, her warmth, her scent, her . . .
"Kate!" the Professor yelled and Kate walked out of the lab. I wanted to follow, but I didn't think it a good idea to leave the creature unattended. I watched it as it rolled around on the table.
Now don't think I'm too much of a weirdo, but there was something sexual about the appearance of the creature. I don't know if it was just because I was thinking about the 2 women in my life naked and fondling each other or what—but my penis grew harder and harder just staring at this creature. I could hear Kate and Professor Gale talking outside, but I couldn't make out what they were saying. I imagined they were taking each other's clothes off and then returning to do each other while I watched.
Kate was right, as I looked at the slimy creature it was getting bigger—much bigger. I leaned in and felt a sudden need to touch it when . . .
"Mark!" the Professor, said.
I nearly jumped out of my wet jeans.
"I don't want you to touch it until we know more. Now why don't you go change into some dry clothes?" Once again she looked down at my crotch and I did as well. There was a definite lump in the denim and I tried to hide it.
"I don't think she noticed," the Professor whispered and my heart skipped a beat. I smiled in total humiliation and left the room.
I grabbed my dry clothes out of my car and changed in the bathroom next to the lab. My cock was throbbing and I knew it wasn't going to subside. I knew I better do something about it so I started jerking off. I could faintly hear Kate and the Professor talking science talk in the lab and seeming to get some results. I also heard a lot of whispering as if they knew what I was doing in the bathroom. They probably did. That somehow made me even more turned on; as I stroked my dick imagining them standing outside the door.
I looked over and noticed that I forgot to lock the door, which meant that either one of them could open the door at anytime and see me yanking my crank. If that happened I wouldn't even stop, I would just spread my knees open and invite them to watch! That didn't happen, of course, but the idea of it helped me accomplish my task. I blew my wad, changed my clothes and opened the door. I jumped and made an embarrassing bellow when I saw the Professor was indeed standing right outside the door.
Without missing a beat she said, "Mark, do me a favor and run down to the store, I'll give you a list of supplies I'll need for this new experiment." She said.
"No problem," I said as cool as I could. I looked at her, trying to look innocent, but she looked back at me as if she knew exactly what I was up to in there. And how more obvious could I be, my face was beat red, I was sweating, and breathing quickly. I glanced into the lab and saw Kate look up at me with a smirk as if she also knew.
At this point I also couldn't help but notice the creature had at least quadrupled in size! I was about to ask how that happened when the Professor whisked me away to my chores.
When I returned Kate and the Professor were hard at work analyzing, taking notes, poking, prodding, etc. They both seemed glad that I had returned, I don't know why exactly it wasn't like anything I picked up at the store could have been vital in any way, but there was a noticeable reaction from the two of them that I had returned.
"Everything okay?" I asked.
"Fine, fine," the Professor said. "Now I need you to do me another favor, Mark. I need you to go up on the deck and work on those chairs. Please stay there and finish them today."
"Okay." This seemed strange to me. How could the chairs be a big deal? We may have found another scientific wonder and she is worried about finishing deck chairs? Something was up.
"And Kate, I want you to relax. Go work on your tan and keep Mark company; like we discussed," She added.
"Professor, I don't think you should be alone with that thing, there's something odd about it. Look how it grows and shrinks!" And it had shrunk. Since I had been gone it was almost back to its original size.
