We had been on this rock for a long time. The four older kids had all turned eighteen a while ago and I was fucking tired.
This pioneer life had been hard but we had built a very nice home out of almost nothing. There were a lot of children of varying ages running around.
We had a thriving garden and had even started domesticating the little critter's that supplied us with protein. The creek bed had been dredged out to make for better swimming.
Each of the boys, Pam's son Art and My daughter, Cam's son Science had taken up residence in two of the vacant shuttle pods. I needed to talk to Art about something one day and since we hardly ever knocked, I didn't even think to before entering the shuttle.
"Uh. Fuck. Baby, you fuck me even better than Daddy used to. Oh, shit."
That was O's voice! I entered the space quietly to see her with her legs around the young stud. Her hips rocked as he entered her over and over. He pulled out completely and reentered her.
He wasn't her son but as he penetrated her over and over, I heard him groan, "oh, Mommy."
"I love feeling your dick pushing through my lips like that, Art."
The bed in that shuttle had seen enough use that it squeaked as they fucked. I heard the sound speed up and I knew that Art was going to fill O's pussy with fresh, potent cum.
"Oh, Fuck. I'm cumming Art." O exclaimed.
"Me too, Mommy." Did he want to fuck Pam? Had he fucked Pam?
I adjourned to the great outdoors to wait for a better time to ask my question.
O seemed shocked to see me so close to the shuttle and her face colored to about the same shade as her chest above her tits. That rosy, post orgasm glow.
"Hi Daddy."
"Hi O. Whatcha up to?"
"Not much. How's it hangin'?"
"All shriveled up in the middle, I'm afraid. You girls may need to find some dick somewhere else. I'm feeling pretty worn out these days." My dick had gotten pretty erect while watching the two fucking, though.
I kind of wondered why Art wasn't fucking one of the two eighteen-year-old girls, Trix and Trese. A couple of days later, I found out when I was outside the shuttle that the other boy, Science, Cam's son occupied and I heard two girls squealing while they were getting fucked by the resident of that domicile.
O's daughter, Trese, was moaning and sounded close. "Oh. Daddy. I'm gonna cum for you. Breed me like you bred Mommy when she was young."
Trese knew who her daddy was. It was me. Did she really want my dick up in her? I was definitely hard now and I heard Science grunt out several times while he filled her.
"I'm cumming." I heard my second daughter cry out.
Well, now I had something to think about. The boys were fucking. The girls were fucking. I was sure that Trix was sexually active too. I kind of wanted to find out just how active.
For the last few years when I fucked one of the women, it was hit or miss whether she would get pregnant or not. I wasn't shooting blanks exactly but I was sure that my swimmers were at least as tired as I felt. The boys had a much better chance of knocking the young women up than I did.
I came across Trese, swimming in the creek. I asked if I could join her and she gave me an enthusiastic "yes."
I was as naked as could be when I splashed in and she came over to give me a hug. I was happy that I started to get hard against her. Trese was too.
She looked up and kissed me. I kissed her back.
"I heard you with Science the other day, calling him Daddy. Were you thinking that you'd like my cock in your pussy, honey?"
"Yes Daddy. I want to be your new woman."
"Do you know that I'm not just your father but your grandfather too?"
"Rumor has it." She gave me a sexy smile that told me that it not only didn't make any difference to her but that it also excited her.
"I think that we should get nice and clean and then you and I can find a nice soft bed together."
The shuttle where David and Dale had lived, before we had made the underground homes, was vacant. We stole in there, casting our eyes back and forth, hoping not to be seen