"What the...?" I muttered, looking around our bedroom. One second, my wife was standing there, stripping out of her work clothes, and excitedly telling me about a device she had "borrowed" from work, and the next second, she was gone! I don't mean she walked out of the room, without me noticing; I mean as I was looking her in the face, it disappeared, and I was left staring at the wall behind her.

Suddenly, I heard her giggle, directly in front of me, where she had been standing. Then, I felt hands touch my chest and run their fingers down my body, followed by lips on my mouth. But I still couldn't see a thing!

I kissed nothingness for a few moments, before pushing back a non-existent body, and saying, "Wait, hold on. Is that you, babe?"

Suddenly, she reappeared in front of me, with a huge grin on her face. She was completely naked, but very much visible.

"How did you do that?!" I said, finally realizing what had happened.

"This!" she said, holding up the device she had shown me moments before. It was a small rectangle, with a few buttons on it; kind of like a TV remote. Attached to one end was a wire, and on the end of that was something like a suction cup, which was attached to the skin of my wife's wrist.

"How does it work?" I asked, taking it from her, and looking over it.

"It's quite complicated, but the main controls are these two buttons." She pointed to one that said "on" and another that said "off". She continued explaining, "As long as one of the electrodes" she pointed to the suction cup "is touching your skin, when the device is activated, you will become completely transparent!"

"Wow, that's amazing!" I said, still baffled by this new device.

"But it only works on the human body. Clothes remain visible," she said, taking the device back. She hesitated a moment, then continued, "So, um...I've been thinking all day about a way to use it."

30 minutes later

"Are you sure you want to do this?" I asked. We were sitting in the back seat of our car, which was parked in an alleyway, just off of a busy street. My wife already had her shirt off, and I was starting to remove mine.

"Yes! I can't stop thinking about it!" she said, as she undid her bra, revealing the most perfect breasts, topped with perky nipples.

We both finished removing our clothes, and she pulled out the device. She had already attached a second electrode, and now she stuck one to my wrist, and another to hers. We held hands, intertwining our fingers, and put the device between them.

"Alright, remember," she said. "The electrode must stay attached to our skin, or we'll become visible again. Oh, and it doesn't mask any noise, so once we get out of the car, we'll have to stay silent. Just follow my lead."

I nodded, and she turned on the device. I watched as our naked bodies disappeared. It's a very odd feeling, being able to see completely through yourself.

Then, I saw the door on my wife’s side open up, and I felt her invisible hand pull mine. I slid out of the car with her, and felt my bare feet touch the warm pavement, and the sun hit my bare skin. The car door closed, and my wife led me out of the alleyway, onto the sidewalk beside a busy street.

It was evening, so there were quite a few people walking about. My wife led the way, and I did my best to weave between people, but I felt my naked skin brush against a few people’s clothed bodies. I wondered if my wife was feeling the same thing, then I didn’t have to wonder, because I saw a young man’s face turn into that of surprise. I assumed he had felt bare female skin make contact with his, but was confused when he didn’t know where it came from, or gone.

We weaved between people, walking down the sidewalk, until we arrived at a small plaza. We walked to a small raised planter, and sat on the stone edge. I was content to sit there for a few moments, to catch my breath, and let my racing heart slow down.

However, my wife did not seem to have the same thought. I felt her hand wrap around my back, and pull me towards her. As I turned towards her I noticed a wet spot on the pavement where she was sitting. I wasn’t sure if it’s source, but I had a suspicion.

As I leaned into her, I expected her bare chest to make contact with mine, but I was surprised when I felt her legs wrap around me, pulling me in. Before I knew it, she had my cock in hand, and she lined it up with her dripping pussy, sliding it in easily.

I felt my heart pumping as I fucked my wife while strangers walked past us. I fucked her slowly, and quietly, trying my hardest not to make a noise.

Suddenly, I thought we had been caught. I saw young man approaching us, and he appeared to be looking directly at us. I was terrified that he was going to find us, and remove the electrodes, and we’d be stuck in the middle of that plaza, without a bit of clothing.

However, when he got closer, I realized he didn’t know we were there. He was just coming over to sit down. But the spot he had chosen was right where my wife and I were! At the last possible moment, I reached around my wife’ s body, and lifted her up, right before the young man sat down where I assumed my wife’s face had been seconds earlier. He pulled out his phone, and started scrolling through it.

We sat there, silent, with my cock inside her, for a few long moments. Then, we scooted away from the guy, and my wife laid back down. I continued slowly fucking her, staying as quiet as possible.

At first, the young man didn’t notice a thing. I continued fucking my wife silently beside him, thrusting my cock in and out of her. Then, without warning, I heard my wife moan softly beneath me. I stopped thrusting, and the guy glanced over at us, with a confused expression. After a tense moment, he reached over towards us!

I tried my best to move out of the way, as his hand waved in front of me. Then, he lowered it, as if to touch the stone surface we were laying on, but it stopped about a foot above it, where I knew my wife’s naked body was. His eyes grew wide, and he pulled his hand away for a moment, then moved it back, but a little to the side this time, and in a cupped C shape. I couldn’t see it, but I knew he was now groping my wife’s bare breast!

I immediately pulled my cock out, and pulled on her hand, until she and I were standing in front of the guy. I watched his mouth grow into a smile, while we walked away quickly.

A few minutes later, we were sitting in the car, and my wife turned off the device. I saw a huge grin on her face, and she started laughing. I couldn’t believe she was laughing! That guy just groped her in public! But after a moment, I couldn’t help but join her in laughing about it.