[piecenick]

A couple of years ago they had a series "Masters of Sex", I think it was on Netflix, very sexy series about a sex clinic, with lots of nudity. My wife loved it, it played right into her fantasy, she masturbated every time she watched it. If there is one thing I like to do, it's to try to make my wife's fantasies come true.

My oldest friend, Jack, is a techie like me, we frequently build contraptions that it would be a lot easier to just go buy at a store. We have hot tubbed naked with him and a couple of his wives, he's been married a few times, I have shared wife pics with him (my wife said I could show them to him, but I couldn't tell him she knew).

So I set it up with Jack to fulfill my wife's fantasy. I told her that Jack and I were working on making a new kind of vibrator, we actually did try this once, but it never got off the drawing board, and that I'd like to try it on her. Of course she liked that idea, then I told her that since he helped build it, Jack would be there. I could see her face get red, I knew that would get her pussy very wet. I told her we were going to test it against her favorite vibrator, to see if the new one was better.

She stuttered "when do you want to do this?"

I told her "tomorrow afternoon, I invited him over to go swimming, we can test it first. It would help if you trim your pussy closely, or even shave it".

That was a very hot night, as the adventure played in her mind.

When Jack come over he brought our 'contraption', just something he bought online. My wife was nervous, so I gave her a glass of wine. I know part of her fantasy is to be treated like an object, to be talked about as just a test subject to be studied. So the 3 of us were sitting down, Jack and I started talking about what we expected to learn from the test, Jack was even taking notes to add to the fantasy. We talked about the how to test for levels of stimulation. we only used medical terms, labia majora, vagina, signs to look for like nipple erection.

I had set up our guest room with a gooseneck lamp, and two chairs at the foot of the bed. I told my wife to go undress and put a robe on. She came back looking very nervous with her thin cotton robe, I helped her get on the bed, I had pillows to prop her up, as soon as she got situated I asked her to open her robe. Jack had seen her nude, but not like this of course. She opened her robe and I asked Jack to help me spread her legs so he had a good view. I could see her bare pussy was pulsating and wet.

Jack and I put latex gloves on , then I told Jack that it looks like the subject may be stimulated already, maybe we should take some pictures of her vulva and labia minora to see if there are physiological changes after we use the device. I took out my camera, took a few pics then asked Jack to spread the labia for me. My wife groaned when she felt his hand move her lips apart, she was so wet she was dripping, I then asked him to see if he could feel if her G-spot was stimulated, he slid his finger into her and when he rubbed her g-spot, I could tell she was trying to hide an orgasm.

Then we examined her nipples, they were indeed erect. Then Jack said he wanted to test the devices. So I got her regular vibrator, I told her we would have to blindfold her so she couldn't see which one we were using. I knew that would add to her arousal.

Jack said, "lets try device A first". He turned on the vibe he brought, it was a wand with a vibrating egg on the end. He started moving it up and down her slit, she was moaning, I told her that the subject was to remain quiet and was not allowed an orgasm until testing was complete. Nothing makes her cum faster than being told she cant come. I held her lips open while Jack moved the egg all abound her labia, that was it, she let looses with an extremely intense orgasm, moaning and thrashing. The testing was concluded.

Jack left and got in the pool, my wife needs my cock after she comes like that.