Chapter 11: A Baby Sibling?

I vaguely recognized the sound of the zipper to my tent opening and curled up, alone, in my sleeping bag to avoid the cool night air that entered as Tanya was leaving my tent. Then Tanya and I both froze as we heard voices from our parents’ tent.

“Hey honey, you awake?” It was my dad talking. Our mother made an indecipherable noise, and Dad continued. “After taking care of you with your sprained ankle, I’m feeling really frisky.”

“We can’t!” Mom whispered. “We used the only condom we brought with us when the kids were out hiking this afternoon.” What the fuck? Mom and Dad had gone at it while Tanya and I were hiking? Even though Tanya had just blown me twice, my dick started to swell, thinking that maybe Dad had been pounding Mom at the exact same time my cock had been inside Tanya.

“Besides, the kids might hear us.”

“Those two? They’re both exhausted from hiking up that steep trail. When’s the last time they both went to bed before we did?”

“You have a point,” Mom conceded. “But we don’t have any protection.”

“Well, would it be so bad to have a third kid? Mike’s always been a good big brother to Tanya, and you know she would dote on a baby. We’d have a lot of help with a newborn that we didn’t have when those two were little.”

“Are you saying?”

“Yeah, let’s roll the dice! Maybe you catch; maybe you don’t. If you don’t, we don’t have to keep trying once we get back home.” Dad’s argument that it would be OK to try to knock mom up, just this one time on a camping trip, had my cock absolutely rock hard. Tanya was half bent over, trying to exit my tent. I pulled the sleeping bag off my aching cock because I was worried that rubbing it against the smooth lining would make me cum again. Then I stood up to grab my little sister around her narrow waist. Without either of us making a sound, Tanya got on her hands and knees. Knees inside my tent, hands on the ground outside. We heard our mother and father make the same satisfied noises we made every time my cock had gone inside Tanya. I took a deep breath to try to stay silent in light of what I planned to do next, and I heard Tanya do the same. I guess neither of us could resist the urge to fuck while hearing our parents doing just that. I pulled my sister’s panties to the side. I don’t know if it was sucking my cock, or hearing our parents talk about making a baby, or some combination of the two, but Tanya’s pussy was wetter than it had ever gotten on the trail. My cock entered her so easily. I tugged on her hips to pull myself all the way inside her, but I didn’t try to fuck her. Really, there was no need. Listening to my dad grunt and my mother moan, I would have cum instantly if I had tried to thrust even a single time inside my sister. As it was, I could feel her trembling beneath me. I was shaking as well. Our parents were fucking, and instead of grossing us out, it was making Tanya and I uncontrollably horny.

“Oh, honey, this is so good!” My mother moaned. “Let’s keep trying to make a baby when we get home.” I felt my sister’s body shift as she lifted one arm up to her mouth as she almost bit her forearm to keep from calling out in pleasure as our own mother asked to be bred. I felt myself wishing I could try to do the same thing to Tanya if she were to stop taking the pill. I wondered if Tanya was thinking the same thing as her body trembled beneath mine. I’m pretty sure Tanya came a few seconds after our mother gasped that she was going to cum. However, first our father came, or at least he came at the same time Tanya did. Then I let loose another round of cum, hearing my father blow his wad. Only after he had pumped our mother’s unprotected pussy full of cum did she get off herself. Even though I was spent, again, and quite ready to fall asleep, I didn’t dare move and kept my softening cock as deep inside Tanya’s pussy as I could manage. It wasn’t until we heard both parents start snoring did we relax. My now soft cock slid out of Tanya’s pussy as I sat down in the tent. Standing up and getting ready to zip my tent back up, Tanya whispered to me, “Perv! You got all horny hearing our parents try to make a baby. Were you thinking about putting a bun into my oven listening to them?”