Family taboo, Brother and sister get caught by their daughters, “Fuck me harder, brother!” Meg cried out, her voice partly muffled by the pillows her face and shoulders were resting against. She always liked to emphasize our relationship whenever we fucked, especially since we’d started up again six months earlier. “C’mon, Josh, you’ve got more left in the tank than that!”
I’d already been fucking her for 20 minutes in various positions but I squeezed her hips tighter, pulling her torso towards me as I thrust forward. “Your wish is my command, sis,” I said, as my thighs slapped against her ass over and over, causing her moans to get louder.
After already cumming in her twice earlier, Meg’s pussy was swampy-wet, not producing a lot of friction for me. Meg’s body started to shake, in what was at least her tenth orgasm of the afternoon. I kept pounding into her, starting to gasp from the oxygen debt I was incurring.
“I’m not sure… I’m gonna get there again, Meg,” I panted, when her orgasm ceased.
“I’ll get you there,” she said, pulling off of me and spinning around to lie under me, her hand grasping my cock. She said, “Fuck my mouth, instead,” directing my cockhead between her lips as she tilted her head back to align her mouth and throat.
I pressed forward with my hips, sliding my cock into her throat, pulled back and gradually sped up until I was fucking her mouth and throat, hearing her quickly exhale or inhale through her nose between thrusts. Between the tightness, her tongue whipping around my shaft and the suction she was applying, I felt my orgasm approach, my moans matching what I felt. When she reached back and shoved a slick finger up my anus and started to massage my prostate, my ejaculations burst forth, down her throat, then into her mouth as I pulled back to let her swallow and breathe.
When I was done shooting, I pulled out of her mouth, then backed up so I could lean down and kiss her upside down, tasting myself on her tongue.
We were trying to get in the last sex we could before our daughters got home for Spring Break. As far as they knew, we were a brother and sister who wound up as co-parents to twin girls through unique circumstances – but slept in separate bedrooms.
The sudden outbreak of applause from the doorway told us the girls were home early and our secret was flaming cinders. Open zippers on their jeans told me that they’d probably been playing with themselves while watching us. Jess and Amy walked over to the bed and climbed onto it. Jess knelt beside me and kissed me like a lover, while Amy kissed Meg after she also rose to her knees.
“We want in,” Amy declared. “Make love to us, too, Mom and Dad.”
Before I go any further, let me back up and tell you a little about our family’s history.
Meg is my fraternal twin, with two much older siblings. As the babies in the family, we’d always been close and felt attracted to each other. Meg tried several times in the first months after we turned 18 to seduce me. I resisted because I knew cystic fibrosis ran in the family. It wasn’t until we were both tested in 1990 for the recently discovered gene that’s responsible and we became certain that we were both carriers that she stopped pursuing me. We headed off to different colleges.
I started dating Meg’s best friend Carly during the summer after Junior year of college, then married her in 1994, just a month after graduating. We immediately started trying to get pregnant. Due to an eventual diagnosis that Carly’s fallopian tubes were blocked, we had to resort to in vitro fertilization, which my first job’s health insurance actually paid for back then. Four embryos resulted from the first IVF cycle in the summer of ’96. Two were frozen and two were implanted into Carly and both took.