Jared
We all sat around the small round table as Mom began her speech.
"The first thing that you two should know is that your father and I are brother and sister, just like the two of you. As your mind digests that, you'll likely wonder how we had children without any noticeable deformities. The answer to that question is the next big shock on this day of celebration. Both of you were adopted. And yes, you are genetic siblings, so no, you can't have children either."
"You asked if there were signs of your pending relationship in the past. Not to the average eye, but from the perspective of a brother and sister, yes, there were. It was subtle, but the biggest clue was that you tried so hard to stay away from each other. It was obvious to the two of us that there was a spark between you, but you worked so hard at hiding it that you even convinced yourselves that there was nothing there at all," Mom expressed.
"So, how did you hide the adoption from your friends, and better yet, how did your parents feel about this?" I inquired.
"Hiding the adoption was easy with two well-timed moves to new towns far from where we grew up. We adopted you from a friend of ours who was in a bad spot with her family due to her unexpected pregnancy. She knew our secret, and we helped her with her little problem. We three moved away the first time to a big city so that she could have the two of you without the scrutiny that often accompanies small towns. None of us knew at the time that there were two of you, but that only made us happier."
"The second move occurred after she had given birth, and we had legally adopted you both. That's when we moved here and never told anyone that you were adopted," Mom finished.
"As for how our parents felt about us, we were a very close-knit and loving family. Your mom and I did most things together over the years, even going to school functions together. We knew better than to act overtly romantic, but we did spend most of our time together. Our Mother knew about our amorous activities away from prying eyes and quickly got us to use birth control. Dad figured it out after I graduated High School and insisted on staying home. I explained that it was to help with household bills, but he could tell that it was really about staying with your mom," Dad related.
"Have you kept in touch with our birth mother?" Jamie asked.
"Oh yes, Jamie. In fact, we send her pictures all the time and she did come to your first few birthdays as a friend of the family. After that, she found a good guy, got married, and now has kids with him. You can meet her anytime you like," Mom revealed.
"Wow, and we thought that we were going to get your heads spinning!" I commented.
Jamie
"So, how do you plan to explain our relationship to your friends?"
"We have no intention of explaining anything to them, just like our parents didn't with their friends. You never have to explain your actions to anyone while you are with us, whether in or out of this house," Mom fired off without a second thought.
"What if they ostracize you for it?"
"Then they were never our friends, to begin with, and we'll just move again. Besides, I've been thinking that it's time to downsize and move closer to our kids," Mom answered with a sly little grin.
With all that said, we reheated breakfast and sat down to eat and chit-chat a little more. Once we were finished, Mom and Dad excused themselves and headed up to their bedroom. Jared and I moved to the couch to snuggle and watch the parade as we began to hear the conspicuous sounds of sex through the ceiling.
"Oh my God!" I said aloud. "Those two are upstairs fucking their brains out."
"Yes, they are!" Jared added. I don't know about you, but hearing them go at it as brother and sister is kinda turning me on."
"Me too," I replied as my hand found Jared's growing cock. The next thing I knew, Jared was naked and pulling off my shorts before diving face-first into my already leaking pussy.
As he drilled his tongue into my overheated cunt, I cried out, "That's it, eat me like only a loving brother could!"
Just as he had me in the beginning stages of a pulse-pounding climax, Jared switched holes.
"Ohhh! You anal-loving bastard!" I squealed as his oral diver reached deep inside me where his stiff prick had been just been hours ago. His change in venue did nothing to compromise my orgasm but rather increased the heat as I howled aloud while spraying his face. I clutched his head firmly with my thighs, likely cutting off his air supply, but cared not as I shook like a nine-point five on the Richter scale. His tongue was still working its magic as I flopped about uncontrollably on our parent's sofa.
After another minute or so, I finally released his head as he gasped hard for air before moving up to kiss me zealously. While our tongues went to bat, I reached for his prick and lined it up with my sopping slit before forcing him into me. Jared took over from there, drilling my wanton crevice the way I loved it. He was taking a slower approach and pausing once he bottomed out to grind his pelvic bone against my clit, and I was loving every second.
Cynthia (Mom)
After we finished eating breakfast, I begged Brian to take me upstairs and fuck me. The look in Jared's eye as he held Jamie's hand and told us about their passionate love affair had me leaking not only from my eyes. Once we finished talking and eating, I needed Brian's cock in me bad. I was so damn horny that I started to strip once we were out of eyesight of the kids and was naked by the time my back hit the bed.
Brian must have been quite randy, too, because once his pants came off, I saw him harder than he'd been in years. As he moved to the bed, I noticed precum forming at the tip and pulled it toward my mouth for a quick lick and suck. After getting all I could, Brian pulled away and pressed his face between my outspread thighs. His tongue split my labia and quickly found my swelling nub. He lapped at it for a minute before sucking hard and beginning to nibble lightly. This always sent me into a quick orgasm, and he knew that too well. I forgot all about the kids downstairs and screamed hard as it all hit me.
Jamie
As Jared fucked and ground on my wide-open genitals, we both heard a scream from upstairs that was unmistakably Mom and definitely sexual.
"I guess we got them all riled up with our talk of having a sexual affair," Jared said, echoing my own thoughts.
"Well, if it's a competition, then let's give them something to strive for," I replied while clenching hard on Jared's intruding pole.
"Oh, fuck!" he wailed as I kept up the constrictiveness of my cunt.
Brian (Dad)
"I don't know what's going on down there, but it seems that those two are having at least as much fun as we are,"
"Well, I think we should have more!" Cynthia squealed while tightening up her own pussy for the enjoyment of both of them.
"Oh, Baby! That feels fucking fantastic!"
Jared
"Yeah, I think it is on."
"Keep grinding like that, brother, and I'm gonna cum like Mount Vesuvius and drown you like Pompei," Jamie panted as her eyes gradually became slits and her entire body quaked.
Spreading her legs even further apart, I worked her clit over like Tyson using a speed bag. I could tell that this was going to be the strongest orgasm that she'd ever had with me based on the mumbling and grunts cascading from her gaping mouth. When she arched and froze, I knew she was there.
"Arrrggghhh!" was the only discernable word as her scream permeated every square inch of the house and likely a few others.
Jamie sprayed me with the heat of her climax for several seconds before folding down into a sweaty, sexy lump of wanton nudity. I raised her up just long enough to swap places with her and lay her amazing form on top of me as she panted and muttered unrecognizable blather.
Cynthia (Mom)
Just after we both came, the house shook from what I assume was Jamie's mouth and a colossal orgasm.