Mom stood up and kissed me like she would kiss a lover, not her eighteen-year-old son. As her tongue probed my mouth, I rubbed her round bottom. Pulling her close, I felt Mom’s breasts against my chest.

“You said you and Dad joined the fun with Jeff and Beth. Does it mean you have sex with them?”

“Yes, we have sex with your brother and sister, and now with you. Mark, no one is forcing anyone to do things they don’t want to do. If you decide you don’t want to participate, you don’t have to.”

“What if I want to?”

Mom smiled, turned off the shower, and we got out. After rubbing each other with towels, Mom took my hand, leading me outside. I stopped when I saw my sister sitting on Dad’s lap, moving up and down on his cock. Jeff knelt between their legs, licking Beth’s clit and Dad’s shaft.

Letting go of my hand, Mom knelt next to Jeff. She nudged him aside, put her face where he was, and took over. My brother stood up, offering his cock to Beth. She stroked him and then took his dick in her mouth.

Even though I had come several times, the latest time in Mom’s mouth, I felt my cock swell. I wrapped my hand around my growing pecker, stroking it.

Dad gripped Beth’s hips, guiding her up and down on his cock. She sucked Jeff’s dick while Mom kept up the assault on my sister’s clit with her tongue. Tired of just watching, I moved next to my brother. Beth released Jeff’s cock and took mine in her mouth. I started playing with one of my sister’s full breasts as she switched back and forth between my brother and me.

A few moments later, I heard Dad announce his climax. Beth pushed Jeff and me away so she could ride our father. I watched Mom fondle Dad’s balls as he unloaded in his daughter’s pussy. When Dad’s cock pulled out of Beth’s pussy, Mom covered her crotch with her mouth. I could hear the slurping sounds as Mom sucked Dad’s semen from my sister’s pussy.

Beth got off Dad’s legs and said, “I need a beer.”

Jeff and I went into the cabin to get beers. “So, what do you think about all this?” Jeff said as he handed me several cans.

“Let’s see. Since I got up this morning, I lost my virginity when I fucked my sister. I watched Beth fuck you and Dad. My mother, brother, and sister sucked my cock. I sucked your cock and swallowed cum, and you want to know what I think?”

“Yeah, are you okay with this or not?”

“So far, so good. I know I’m going to have fun.”

“Just wait until you fuck Mom. She can squeeze your dick with her pussy so hard you’d think it would break.”

“It sounds like it would hurt.”

“Yeah, it hurts so good,” Jeff said. “You don’t think it’s weird having sex with a guy? With me?”

“Everything happened so fast I didn’t have a chance to think about it, Jeff. I’ve wondered what it would be like, and now I know. But, to be honest, I’m indifferent to it. If you want to know if I would do it again, I would. From what I’ve seen so far, there aren’t many limits.”

“As I said earlier, I don’t mind sucking cock, but I have no interest in kissing a man,” Jeff said.

“No worries there, Jeff. I don’t have any desire to kiss a man either.”

My brother and I took the cold beers outside. We sat with the rest of the family, relaxing, recouping, and enjoying the evening.

After downing half of my beer, I said, “So, what are the rules?”

“We don’t really have any rules, Mark. If someone says no or stop, you respect it. No one should feel forced to do anything they don’t want,” Mom said.

“How did this all start? Beth said she seduced Jeff, but it doesn’t answer my question.”

“One afternoon, I was lying in the backyard working on my tan. Jeff came home, and we started talking. I asked him to put sunscreen on my back, and he did. We started talking about sex and admitted we were virgins. I asked Jeff if he wanted to have sex with me, and we did it. Since then, we’ve been sucking and fucking,” Beth said.

“Dad and I found out when we came home early and saw Beth kneeling in the living room with her brother’s pecker halfway down her throat. We watched for a few minutes, and then Jeff came. Once Beth swallowed her brother’s juice, we confronted them.

“We were surprised by how honest Beth and Jeff were. They couldn’t deny having sex, but they could have told us it was a one-time thing. After they told us how things started, your father and I discussed it in our bedroom. We realized there wasn’t anything we could do to stop them, so we decided to accept what they wanted.”

“You haven’t explained how you and Dad got involved,” I said.

Beth chuckled. “A few days after getting caught, I talked to Mom. I was curious about sex with another woman. I’d seen videos, and they piqued my interest. Rather than tell me, Mom showed me. By the end of the day, I knew what it was like to have a woman eat my pussy. I also knew what it was like to eat pussy.”

“When your Mom told me what happened, It turned me on, and I fucked Mom on the kitchen table. We went to bed later and talked about it. Mom asked me if I wanted to watch her and Beth. I said I would, and Mom told me she would see about setting it up,” Dad said.

“Mom told me Dad wanted to watch us have sex, and I agreed. I said I would do it if we could invite Jeff too. You were out taking pictures a few days later, so we decided to go for it. Mom and I got into bed and started messing around. We stripped each other and went at it. It was so hot doing sixty-nine while Dad and Jeff watched. After we got each other off, we included Dad and Jeff.

“It was the first time I sucked Dad’s cock, and Mom blew Jeff. We switched back and forth a few times, and then I fucked Dad while Mom fucked our brother. Since then, we’ve gotten together when we could,” Beth said.

“One night, Jeff and I watched Mom and Beth and stroked our cocks while they licked each other’s pussy. I’d always harbored bisexual feelings and decided to act on them. Reaching over, I started playing with Jeff’s balls. He removed his hand, and I jacked his cock. When Mom noticed, she and Beth stopped and watched us.

“I threw caution to the wind, leaned over, and took Jeff’s cock in my mouth. The feeling of his pecker against my tongue, as well as the idea of sucking a cock, was overwhelming. With your mother’s encouragement, I took my first attempt at sucking a cock to fruition. While the feeling of his cum shooting into my mouth was shocking, I quickly accepted it,” Dad said.

“After Dad blew me, I felt it only fair to return the favor. Until then, I never really thought about sucking another guy's cock, but I figured what's good for the goose is good for the gander. I stuck with it until Dad came. Once everything sunk in, I realized I felt indifferent about sucking cock. We did it a few more times, and I came to enjoy it. That’s when I started thinking about your cock, Mark,” Jeff said.

“Whose idea was it to include me?”

“We all decided it would only be fair for you to know about us, so Beth came up with the idea of what happened today. She and Jeff knew you’d be in your stand, and easy to set you up. We also agreed we wouldn’t force you if you didn’t want to be part of our relationship,” Mom said.

I finished my beer, got up, and went into the cabin for another one. Gathering enough beers for everyone, I went back to the campfire. Sitting in my chair, I tried to absorb what I’d learned.

“I have a question. How did you hide it from me?” I said.

“You weren’t looking for it, Mark. You’d be surprised how many things go on around us we’re unaware of. We tried to be discreet and only fool around when you weren’t around, but there were nights when we got together after you were asleep,” Dad said.

I took a drink of my beer and chuckled. “I guess we won’t have to sneak around, will we?”

“No, we won’t,” Mom said.

We sat quietly for a few minutes. I once again did my best to come to grips with my family.

“Mom, Dad, have either of you ever done anything with family before Jeff and Beth?”

Dad glanced at Mom and smiled. “Yes, I had sex with my brother.”

I looked at Dad. He smiled and nodded, letting me know it wasn’t a secret.

“Does Aunt Jane know you slept with Uncle Dave?” I asked.

Mom nodded. She took Dad’s hand and said, “Before I met your father, Aunt Jane was my girlfriend. I’m not talking about a high school friend. She was my lover. While we dated, I introduced her to my brother. Dave started hanging around with us. After too many drinks at a party, we took Uncle Dave to bed one night.

“Aunt Jane and I weren’t virgins by the time we finished. After several more romps, Aunt Jane and I decided we liked men as well as women. Dad is Aunt Jane’s cousin. She introduced me to him.”

“Your mother and I began dating. After taking her out a few times, we had sex. Six months later, the four of us celebrated New Year’s Eve together.”

Mom laughed. “Yup, and nine months later, Jeff was born. That was a hell of a party, wasn’t it, Bill.”

“It was indeed, Mary,” Dad replied as he took Mom’s hand in his.

“Did the four of you fool around together?” Jeff asked.

Shaking her head, Mom said, “No. Aunt Jane, my brother, and I kept our fling a secret. I fell in love with your father and didn’t want to mess things up. We were married when we discovered I was pregnant with Jeff.”

“How did you find out, Dad?” I asked.

“The four of us were close and hung around together. The following year, we had a party for New Year’s Eve. Jeff was two months old, so we left him with your grandparents for the night. We all got a little drunk and started goofing around. Uncle Dave started taunting Mom and Aunt Jane, telling them they should put on a show for us.”

Mom glanced at Dad and smiled. “Aunt Jane and I got up and hugged each other, then she whispered in my ear, asking if I wanted to mess around. I pulled my head back, looked into Aunt Jane’s eyes, and kissed her.”

“To say I was shocked is an understatement. I sat on the couch, watching my wife kissing another woman. When Mom pulled Aunt Jane’s skirt up and grabbed her ass, I thought I would lose it,” Dad said.

Jeff, Beth, and I sat watching Mom and Dad trade smiles. No one said anything for a moment, and then Dad got up to get us a beer. When he returned, he sat beside Mom, gave her a can, and continued.

“Mom and Aunt Jane continued kissing each other. I sat there with my mouth hanging open as they slowly undressed one another. Next to me, Uncle Dave kept encouraging them. By the time Mom and Aunt Jane were down to their panties, I’d realized it wasn’t the first time they fooled around.”

Our mom nodded. “Aunt Jane and I went to the boys, sat on their laps, and kissed them. Dad asked if I had been with your aunt before, and I nodded. I thought your father would be mad at me, but he kissed me and started feeling me up. When he said watching two women together was one of his fantasies, Aunt Jane and I came together again.”

“Uncle Dave and I stripped down to our underwear while we watched them make out. Mom removed Aunt Jane’s panties, pushed her onto her back, and licked her pussy. Your aunt worked Mom’s panties off, then flipped around so they could do each other,” Dad said.

Beth giggled. “What were you and Uncle Dave doing?”

Laughing, Mom said, “They were playing with their cocks. Aunt Jane and I got up and moved to the couch. I sat on your dad while your aunt started fucking Uncle Dave. The four of us had sex in front of each other for the first time.”

“Mom and Aunt Jane got up after Uncle Dave and I came, looked at each other, laughed, and knelt on the floor. I gasped when Mom started sucking her brother’s cock while my cousin sucked mine. They kept it up until Dave, and I came again. Once they finished with us, Mom and Aunt Jane cleaned each other with their mouths,” Dad said.

“Aunt Jane and I told Dad about us dating in high school and having sex with Uncle Dave. It felt great to finally come clean and share my secret. I’m lucky your father is understanding and wasn’t upset with my past.”

“So, what else did you guys do that night?” Beth asked.

“Nothing, Beth. We all felt spent, a little drunk, and wiped out, so we went to bed and slept well.” Dad smiled. “I slept with Mom, and Uncle Dave slept with Aunt Jane.”

Looking at Beth, Mom said, “If you’re wondering, Dad is your father, and Uncle Dave is Ray and Brooke’s father.”

“Thanks for telling me, Mom. I was beginning to wonder after hearing your story. I know why Ray and Brooke’s and my birthday are only a day apart,” Beth said.

“Did you guys continue fooling around with each other?” I asked.

“Yes, the four of us became very close. We had a lot of fun, and none of us regretted a moment,” Dad said.

“Do you guys still have sex together?” Beth asked.

“No, we stopped when I got pregnant with Mark. We started raising our families, and I took over Grandpa’s business when he retired and moved out west with Grandma. I don’t remember the last time we talked about it until now,” Dad said.

“Do you miss it?” Jeff asked.

“I don’t know, I guess so. I still think about the things we did when we were younger and first married.” Mom smiled. “Your father and I have talked about it but never mentioned it to Uncle Dave or Aunt Jane.”

“Why didn’t Aunt Jane and Uncle Dave have any other kids?” Beth said.

“After she had Ray and Brooke, Aunt Jane found out she couldn’t have more children,” Mom said.

I took a drink of my beer while trying to digest everything I’d learned. It was strange in a way. Aunt Jane, Uncle Dave, and our twin cousins Ray and Brooke worked with us, so I saw them daily. Our families would get together for an occasional dinner or cookout, but we didn’t spend much time with them outside of work. I couldn’t help wondering if it was because of past relationships between my parents, aunt, and uncle.

“If no one has any other questions, Mom and I are going to turn in. We will go to the marina tomorrow to see the new boat,” Dad said.

We all stood up and hugged. It was weird hugging Mom’s naked body, and I felt my cock stir. Mom smiled and patted my ass. “Goodnight, kids.”

Jeff and I took care of the fire, went into the cabin, walked to our bedroom, and went in. I chuckled while watching Beth take down the tarp we used for privacy.

“I don’t think we’ll need this anymore.” My sister folded the tarp.

“Works for me,” I said.

Jeff, Beth, and I got into our bunks. My brother turned off the lamp, sending the room into darkness. Lying on my back, with my hands behind my head, I thought about everything that had happened, and I learned. All in all, it had been one hell of a day. My cock flexed as I closed my eyes, and the image of my naked sister and mom filled my mind. I smiled to myself as I relived how my brother and sister introduced me to the incestual relationships my family shared. It only took a few minutes for me to start drifting off.

****

The sun streamed through the windows, waking me the next morning. I stretched my arms over my head, flipped the covers off, and sat up. Glancing across the room, I noticed Beth’s bunk was empty. I got up, heading for the bathroom. As I opened the door, I saw my family in the kitchen, all of them dressed. I stepped back into the bedroom, grabbed a pair of shorts, and pulled them on before heading back out.

After using the bathroom, I went to the kitchen and greeted everyone. Mom poured me a cup of coffee, handing me the mug. I thanked her, sat at the table, and shared glances with Jeff, Beth, and Dad. I realized it was like any other morning at our family camp. The previous day and night could have been a dream if I hadn't known better.

While eating breakfast, Dad told us about the new boat. He said it would be great for fishing on the lake near our property. As he talked, I learned the boat was twenty feet long. Dad said he ordered the latest electronics for it.

“Will you teach me how to operate the boat, Dad?” Beth said.

“Of course, we’ll all learn. The salesman said he’d take us out and show us how everything worked.”

After breakfast, my brother, sister, and I took care of the dishes. We went to our room to change clothes before heading to the marina. I couldn’t keep my eyes off Beth...