Naked Week was amazing - an ongoing visual and erotic feast. Everywhere I looked, the view was sexually exciting -- I had my choice of four large, luscious tits, two beautifully lush pussies and a pair of lovely round asses. Both our wives are high on the scale of Beautiful Women, and yet their naked bodies are beautiful in completely different ways. Both Walt and I spent most of the week at least semi-hard, and the musky aroma of our wives' arousal permeated the air almost constantly. Whenever the mood struck one couple or the other, they would recommence sexual activities, and the other couple would immediately join in.

We did, however, hold to one unwritten rule -- Hands to Your Own, so to speak. We could enjoy looking at, and even checking out, the other couple, and look on closely when they fucked, but we stopped short of any kind of sexual contact with the opposite spouse. That was a line that we weren't willing to flirt with. At least at first.

We had been at the cabin for four days (I think it was Tuesday), and each couple had probably fucked nearly a dozen times, while the other couple either watched, or fucked alongside, or both. Walt and I were sitting on the living-room sofa, while our wives knelt between our knees, stroking and sucking our cocks. I just laid my head back and relaxed into the sensations of Sharon's hands and mouth, alternating my gaze between my wife's ministrations on my cock, and Jean's work on Walt's.

Suddenly, out of the blue, Sharon sat up and turned toward Jean. "Hey Jeannie," she called, "do you think all cocks taste the same?"

Jean looked at her questioningly. "How would I know?"

“Want to find out?” Sharon asked.

Jean turned to Walt, who gestured that it was OK with him. When she looked at me, I just said that if it was OK with Walt and Sharon, I wasn't going to object.

So Jean waddled over on her knees to where Sharon held my cock. "I just thought you might like to get a closer look at Ben's cock," said my wife, backing away so Jean could have access to me. Jean reached tentatively toward my bulging manhood.

"Go ahead," Sharon urged her. "We've been here four days, and I know you've been wanting to check it out. So go ahead and check it out."

So Jean checked it out. First, she gripped my shaft in her hand. "My god, it's thick," she whispered to no one in particular. Then, holding my shaft upright, she cupped my balls in her other hand, and gave me a detailed visual inspection, rubbing her thumb along the frenulum, and then just softly stroking it. She turned to Sharon and said, sort of absent-mindedly, "So strong; I can see why you like it so much."

Suddenly, Jean brought herself up. "What am I thinking?" Uh-oh, I thought to myself, here's where it starts going bad; I gave Walt a concerned glance. "Goodness!" she snapped to herself, "Where are my manners? Of course, if you want to check out Walt's, please feel free." Walt and I exhaled, and Sharon kneed her way over between Walt's legs and gave his cock a similar inspection. She finally pronounced, “Long and shapely!”

Jean hesitated. "Um. . . would you mind if I tasted it? It just looks so delicious."

"Please do," I replied. "I was hoping you would."

So she did. Bending forward, Jean placed my cockhead between her lips, and sucked daintily for a few seconds. When she had grown more accustomed to the idea that she was sucking her friend's husband's cock (or was it her husband's friend's cock?), she relaxed and took more of my cock into her mouth, and licked and sucked all along it, bobbing her head up and down on my shaft.

Now, I don't know if it was just the whole situation of 'Naked Week', or the exciting novelty of having another woman suck my cock, or what, but in minutes, my cock was throbbing and ready to burst. Sharon gives great blow jobs, but this one was approaching 'Mind-Blowing'.

"Uh, Jeannie," I said, lightly stroking her shoulder, "uh, if you keep doing that, I'm gonna come." Jean and I both looked over to Sharon, who had commenced sucking on Walt's cock. She had initiated this whole 'new approach', so I wasn't sure what the 'rules' were going to be. Sharon just winked at us and hummed "Mmm-hmm!" while she kept right on sucking Walt's cock. Jean looked up at me and just nodded. So I laid my head back on the sofa, and shot my cum into Jean's mouth. She lapped it all up hungrily, and kept licking my softening cock until she'd swallowed every drop.

I didn't quite know what to do, but I reached out and stroked Jean's beautiful auburn hair. That was the most intimacy I'd ever shared with any woman besides Sharon, and I needed to express that somehow. "Thank you," I whispered. Jean laid her head against my leg and purred in reply.

I turned my attention over to my wife, who had just released Walt's cock, still stiffly erect, from her mouth. I could see precum oozing from the tip, and beginning to drip down along his shaft. Sharon slid herself forward, and began rubbing Walt's precum along the cleft between her tits, squeezing his cock as she did, so as to extract as much of his slick juice as she could from it. Then she wrapped her tits around the shaft of Walt's cock and began slowly tit-fucking him, sliding her tits up and down along the shaft of his cock. I watched his cockhead alternately disappear in her cleavage, and then peek out the top. Soon, Walt was rolling his own hips, driving his cock up and down in my wife's cleavage. I could see his cock swelling with each stroke. I was getting hard again just watching it. Finally, with a loud groan, Walt shot a load of thick white cum onto my wife's neck and chest. Then another. And another and another, until his cock grew soft and shrank out from between Sharon's tits. She released his cock, and then rubbed his cum sensually into her tits.

I turned back to Jean, who was a bit wide-eyed at the spectacle of her husband and her Best-Friend-Forever doing a sultry tit-fuck. "My turn," I said. I positioned her on the couch, while I knelt between her legs and started nibbling at the insides of her thighs.

As I got closer to her pubes, she started to protest, weakly. "I've never. . . I mean, I don't think. . ." she stammered. But Sharon reached out a steadying hand and stroked her leg from the other end of the sofa.

"It's OK," my wife reassured her friend. "Give it a chance. I think you'll really like it." So Jean relaxed, as best she could, and allowed me to continue eating her pussy.

I cupped Jean's ass in my hands, and slid her forward so I could reach her with my mouth. As I leaned in, I savored Jean's scent as it inundated my nostrils. I relished the way Jean's pussy smelled, similar to Sharon's and yet subtly different. I had never smelled another woman's cunt besides Sharon's, and it was almost intoxicating.

I started by nibbling at her labia, then began licking her with broad, yet gentle strokes. A soft groan escaped her mouth as my tongue began to work its magic on her clit. "Ooohhh," she moaned. "Ooohhh, that's lovely!" and she began to rock her hips against my oral ministrations. Soon, she was squirming and writhing and groaning with pleasure. "Oh my God!" she cried out. "Oh my God, I'm coming! Holy shit, I'm coming!" She clasped her hands on the back of my head and pulled it tight against her cunt. I just kept eating her, and she just kept coming, rolling and writhing and quivering with orgasm after orgasm, until she finally pushed my head away from herself.

"My God!" she exclaimed. "That was incredible! I should've let Walt eat my pussy years ago!" For his part, Walt could only smile.

By this time, my hard-on was about ready to burst, and I thought that it would be best at that point, if I turned my attention back to my wife. So I took a spot on the couch, between Walt and Jean, and beckoned to my wife to come and straddle me, while Jean did likewise with Walt.

Sharon slowly lowered herself onto my cock, but this time, we were more in the mood for something fast and furious, so we did. In what seemed like mere seconds, I was shooting another load of cum into my wife, and we collapsed in each other's arms. While Jean and Walt fucked on the couch next to us, we might even have dozed off for a while. . .

*****

Thus 'The Rules' had been amended, or at least so it seemed, to allow sexual contact short of intercourse across marital lines, but fucking was reserved for spouses only.

That still left us plenty of exciting room in which to operate. Once Walt had eaten his wife's pussy (and he was quite good at it, for being a bit of a novice), we started several of our sessions doing cross-couple 69, and then ended by fucking our spouses. It was all very relaxed, and quite comfortable. I was starting to understand how Jean 'ticked' sexually, and Sharon and Walt were surely doing the same.

One day, later in the week (I think it was Thursday), I walked by the kitchen, where Jean was busy doing some lunchtime dishes. Something about the way she looked, standing there, her delicious round ass pointing toward me, just overcame me, and I snuck up behind her, reached around and fondled her luscious tits. She stopped doing the dishes, and leaned back into me, enjoying the sensations of my hands on her tits. Almost instantly, I generated a stiff hard-on, which poked at her ass-crack. Impulsively, I pressed forward, nestling my rod between the cheeks of Jean's ass. I rubbed my shaft between her thighs, which were already (or still) lubricated with her sex-juices, causing Jean to groan with arousal. She turned her head to kiss me over her shoulder as I continued to grind her.

I slid one hand down and ran my fingers through her silky pubic hair, then cupped my hand over her mound. Slowly, I slipped one finger inside her sultry sheath, then two, finding her wet and slippery inside. Jean groaned with pleasure as I slowly slid my fingers in and out of her, rubbing my knuckles over her clit as I did.