(Author's note: all characters in this story are pretty clearly over 18.
Many thanks for Rose_A_Leigh for her help in making this a better story and for her patience with a newby!)
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Surprise is when you walk in your front door after catching an early flight home from a business trip and you find your rather busty next-door neighbor coming to greet you wearing only your wife's short kimono not quite wrapped around her very tantalizing chest. Shock is when you hear a noise in the back of the house and you brush past that hot neighbor on your way to the master bedroom, only to find your wife riding said neighbor's husband like he was a bucking bronco and she was the best damn cowgirl at the rodeo.
My wife and I had been in our house for almost ten years. It was a nice place but we hadn't made a lot of friends among our neighbors. Most of them either hung out with the other parents with kids the same age as theirs (we forgot to have kids ourselves) or they were retirees that spent time together while the rest of us were working. This wasn't as much a problem for me since I had friends from work that I hung out with from time to time. But my wife Kerri did consulting from her home office and didn't really have a lot of face-to-face interaction with anyone other than me, which was not a situation she relished. We'd considered moving to a different neighborhood a number of times but had never gotten around to it. So we were encouraged when Christy and Tim moved next door. They were a few years younger than us (early-30s) but that didn't seem to get in the way of us getting to know each other. Tim was a tall good-looking guy, easy-going, and his wife was just ridiculously cute. She was short, not much over five feet tall, with an open, round, always-smiling face framed by shoulder length, reddish-brown hair over equally round tits and derriere. She had an infectious laugh that we heard often when we were in their company. They were new in town so we took them to a couple of our favorite restaurants. Then they had us over for a cook-out and suddenly we had friends in the neighborhood! Kerri and Christy especially seemed to hit it off and they started shopping together and hanging out on a regular basis.
Let me establish up front that my wife is a beautiful woman. At the time, she was in her late 30's with a toned body from doing lots of yoga. She has real curves, including a gorgeous tight butt and killer all-natural breasts separated by sculpted abs from all that working out. Her wavy blonde hair is usually down over her shoulders when it isn't pulled into a ponytail during her workouts. I tried to keep up with her despite being a few years older, and managed to keep the paunch down with a regular routine of running and bicycling. I wasn't about to run a marathon, but I was in pretty decent shape for early 40s.
But now I was collapsed against the doorway to our bedroom, looking on in disbelief as my hot wife bounced up and down on our neighbor Tim's cock like her life depended on it. I was torn between grabbing the fireplace poker and bashing both of their skulls in or turning around and walking out into traffic. It felt like I'd been standing there staring for an hour but it couldn't have been more than five seconds before Christy grabbed me by the arm and pulled me back into the family room. I numbly let myself be led over to the sofa, where she set me down and settled in beside me, pulling my head down onto her bountiful boobs. Her height (or lack thereof) accentuated breasts that really didn't need any help. They were very large, very round, very firm and were now cradling my head as I tried to determine whether to cry, howl, scream or hit something.
She stroked my head and whispered in my ear trying to calm me down, which must have worked as I started spending more time noticing the chest I was leaning against than I did the noises coming from the other room. "We were going to tell you," she said, "but we got excited and a little carried away. This was supposed to be the four of us. I really want you, Terry, and I want the four of us to be able to play together." She lifted my head off her chest and kissed me, tentatively at first as if to sense my reaction. When I didn't push her away, she pulled my head to her as she slipped her tongue into my mouth and raised the intensity level by a couple hundred degrees. She swung her leg over me so she could straddle me on the couch, and I was treated to her breasts pressing into me as I pulled her closer and she kissed me even deeper. Her bare thighs pressed against my legs and she held my face in her hands while we continued our fiery kiss. With Christy and I getting to know each others' mouths and her warm little body pressing hard into mine, I actually managed to forget that my wife was fucking someone else in the next room.
I raised both hands to Christy's shoulders and slid the kimono off of her back, then leaned her back a little so that I could move my kissing from her mouth to her neck, nibbling and sucking her soft skin while I explored the round mounds of delight on her chest. She leaned further back, supported by her hands on my knees, as I slowly kissed my way down to her chest. She was now a totally naked armful of warm sexy woman, squirming delightfully on my hardening cock as I nibbled on one nipple while thumbing the other one before moving both hands down to her ass and pulling her even more tightly against my erection.
She gasped after a little while and said, "Sweetie, stop a second. Let me help you out of those clothes." She gracefully slid backwards onto her feet before kneeling in front of me and unzipping my slacks while I fumbled with my shirt buttons. I was still trying to manage my cuffs when she started tugging my slacks down so I raised my butt a little to help. I was finally free of my clothes, but she still knelt between my legs, stroking the insides of my thighs. She ran a fingernail up the underside of my balls, causing my cock to jump like she'd given me an electric shock. She then leaned forward and began to very deliberately lick my balls while slowly stroking my cock with her right hand. I couldn't see for sure but it appeared that her left was occupied with stroking her own sex. Her magnificent breasts brushing against the insides of my thighs felt almost (almost!) as good as her tongue on my balls. I was pretty sure I was in heaven, until she looked me in the eyes and slowly took the length of my cock into her mouth, after which I knew damn well I was. She knew exactly how to use her tongue on the underside of my cock as her head slowly bobbed up and down, taking me all the way in and then pulling back until just the head remained inside. After every three or four headbobs, she would pause at the top and run her tongue around the head of my cock before plunging back down. It was incredible - I had so much blood running to my cock that I pretty much lost feeling everywhere else. My whole universe shrunk down to what this wonderful woman was doing to me.