Family threesome

"So what did you do while we were gone?" I asked to distract Aunt Olivia as I bent her over the coffee table, my sister guiding our aunt's hands to hold herself in position.

"Oh just sat around and watched television," she said idly as commercials played. "It's boring without you guys here."

"Well we're here now," I said, getting behind Aunt Olivia and pressing my cock against her vaginal entrance. I felt bad for using her like this, but her body clearly enjoyed it, and she did like having our company.

My sister watched with her face a few inches from the action as I started to penetrate Aunt Olivia from behind, doggy style. Christie hadn't seen me have vaginal sex with her yet, and my sister was clearly excited to see the whole incestuous show. I pressed my uncovered cock into Aunt Olivia's wet pussy slowly, growning with pleasure as I felt her warm tightness around me.

Christie stripped quickly and I looked at my naked sister's curvy body as I started to fuck Aunt Olivia. My sister wasn't just watching though, she got under Aunt Olivia and started sucking on her breasts.

"Mmm, I thought exercises were over?" Aunt Olivia said in confusion.

"Uh," I said, "We had a lot of food at the party. We need to burn some calories."

"Yeah, I'm doing uh, neck thrusts and tongue extensions," my sister said, as she went back to licking Aunt Olivia's nipples.

"Oh!" our Aunt said obliviously.

I fucked her from behind, in and out of that tight pussy, feeling her cunt walls gripping my cock. Christie watched from underneath when she wasn't sucking on her aunt's titties, then started doing her "tongue extensions" lower, so she was licking Aunt Olivia's clit! It only made me hornier to be fucking my aunt's pussy with my sister's tongue inches away, pleasuring Olivia. I could hear Christie's tongue lapping against that clit, my sister sure loved to eat pussy.

If I went in as deep as I could (all of my mighty six inches) I could touch my balls to Christie's forehead. Immature, perhaps, but we were having a threesome with our aunt. It felt great and my sister didn't stop me. She licked our aunt passionately as I fucked her pussy, all the while Olivia was giggling to the last sketch of the night as she obliviously watched television.

I thrust in and out of Aunt Olivia's oblivious cunt. Christie licked her, moaning under us, then Aunt Olivia was moaning in pleasure as we gave her an unknowing orgasm. I pushed my cock all the way inside again, resting my balls on Christie's forehead and squirting cum deep inside my aunt's pussy as I moaned. I pulled out, "accidentally" shooting a rope of cum on my sister's face. She glared at me but didn't object, so as not to break the spell with Aunt Olivia.

I collapsed on the couch and Aunt Olivia sat naked next to me, my sperm dripping out of her pussy. I wrapped my arm around her and we enjoyed our bliss for a moment.

Soon Christie was standing in front of us naked. The "goodbyes" were on the screen. "Okay, show's over," my sister said greedily, "You need to do more tongue extensions, Aunt Olivia."

"Oh, okay," Our Aunt said. Christie hadn't cum and felt left out, I realized. Oh well, why shouldn't she have her fun? It was fun for me too.

My sister climbed on the couch shamelessly. I looked at her face and realized the cum was gone. Had she grabbed a tissue when I wasn't looking, or...?

But I couldn't think about that for long. Christie stepped forward, pressing her bald cunt against Aunt Olivia's face. Our Aunt began eating out my sister, thrusting her tongue shamelessly into Christie's wet pussy. My sister moaned as she naked stood over her aunt, gleeful as she received incestuous lesbian sex. I loved how confident and sexual my sister was.

Aunt Olivia thrust her tongue deep into her niece's vagina for a few minutes. I got hard again and jerked myself despite having just cum. Christie was moaning loudly as Aunt Olivia ate her out. After a while my sister moved herself slightly so her clit was in front of Olivia's mouth.

"Okay do up and down licks now with your tongue," Christie said. Olivia climbed, flicking my sister's clit up and down with her tongue.

"Don't be lazy, Mark," my sister said, "Stand up and do your rapid hand jerk exercise, it will burn more calories."

"Oh sure," I said, as if that was perfectly reasonable. I stood up and aimed my cock at Aunt Olivia's face, or was it aimed at my sister's cunt? Neither objected, my sister was moaning deliriously in pleasure and Aunt Olivia was focused on her "tongue extension" exercise.

At the last second, Olivia reached up and took my cock, taking over jerking me off. "I want my favorite sauce added to this!" she explained, then went back to licking my sister. She aimed my cock at Christie's clit and I couldn't stop myself from cumming to this incredible sensation, shooting my sperm all over Christie's pussy. Aunt Olivia licked my cum off my sister's cunt hungrily, groaning as she tasted her beloved "sauce".

This was too much for Christie too, who moaned in pleasure as she came and squirted her juices on Aunt Olivia's face and tits. Aunt Olivia licked what she could and offered her tits to me. "Clean me, Mark," she said. What could I do? I licked my sister's female ejaculate off my aunt's tits. If my cock hadn't literally hurt from how hard I'd jacked myself off, after cumming five minutes before that, I would have rammed myself down my Aunt's throat after licking her tits clean.

After that, we just turned out the lights and got ready for bed.

"Goodnight, kids," Aunt Olivia said, standing naked in the doorway to her bedroom, "Thanks for keeping an old lady company."

"Aw you're not that old," I said, and my sister elbowed me. Uh yeah, I've gotta work on my tact. "Well goodnight, Aunt Olivia," I said.

And with that Aunt Olivia smiled and went into her bedroom. I turned and went into my own room to sleep with my sister. Or would we do something before we fell asleep?