Friday Night

I made the ladies change positions, although it's not like either resisted. Aunt Olivia still thought this was a legitimate exercise, somehow, and as my sister came up she mouthed "This is amazing!" to me. She apparently loved having gone down on her aunt with Aunt Olivia she was just doing tongue extensions, or whatever lame excuse she'd spurted out. I suppose it was good to know my sister was as perverted as I was and maybe even had this same fetish for unaware sex, but I also felt like it was dangerous to have the two of us egging each other on. Nevertheless, I wasn't going to stop things now. There was way too much potential here as I stood in front of my sister and Aunt Olivia lay down under is, all of us totally naked and dripping with sexual energy (literally, in all three cases I think).

"So do I do it like this?" Aunt Olivia said, doing a leg lift as proscribed.

My sister looked so happy. I was glad she was such a sexual person, only turned on by incestuous lesbian contact with our wonderfully oblivious aunt. Christie stood there naked, her big nipples hard and her clit looking swollen with arousal. It was easy to see with her twat shaved like that and I didn't hide that I was looking. For my part I was hard again already.

"Wow it's hard!" Aunt Olivia said. My sister and I both gasped, wondering if the spell had finally been broken. "I could barely get my legs up all the way! I didn't know this was such a difficult exercise."

Oh Aunt Olivia, never change.

"Y-yeah," Christie said, "It's really good though for your pelvic floor muscles."

"Okay, I'll try to do 20," Aunt Olivia said.

"Now do your squats, sister," I said with a gleam in my eye. She was standing right over our aunt's face, and she looked even more excited than me.

I wasn't even pretending to be lifting the dumbbell for the moment, craning my neck down, but nothing happened yet.

"Aunt Olivia," I said, "Remember to do your tongue extension exercises."

My sister breathed a sigh of relief. I knew she was a greedy girl, and now I knew she was a hedonist too. She wanted her Aunt to return the favor and eat her out.

"Oh yes, of course," Aunt Olivia said, buying that this was all just an exercise once again. I leaned in even closer to see her extend her tongue toward my sister's pussy. Christie gasped in pleasure, but also slapped the backside of my head (which she had a good angle to do, I was leaning so low to watch).

I looked up in surprise and she whispered, "Don't look at your sister there, pervert!"

I smirked. There was something sexy about discovering her last shred of modesty - not wanting her brother to watch her get her pussy eaten by her aunt. But I stood there and did a few more shoulder presses, not wanting to be a total creep.

She stood up and squatted back down on Aunt Olivia's face. Aunt Olivia did her leg lifts. They really were going through the motions of exercising, but Christie stayed squatted down for a good 30 seconds each time and our Aunt was clearly eating her out. I heard her tongue slurping as she explored her niece's bald pussy. Christie was blushing but really couldn't stop me from watching, and was too distracted from the pleasure (and the squats) to try again anyway.

Christie was clearly enjoying herself despite the exertion of the exercise. I wondered if she'd ever had a woman go down on her before and thought from her excited enthusiasm that this was her first time. Watching this intimate moment was so hot. My boner was at full attention again.

My sister moaned openly as Aunt Olivia ate her out, seeming to be pressing her tongue inside Christie's cunt very deep now, tasting her niece's feminine juices. I could smell the arousal from both women. Aunt Olivia's body knew what was going on as usual.

They did another turn of exercises for a few seconds, then Christie held her squat for more lesbian cunt licking. I could hear my aunt's tongue slurping that slit.

Christie's mouth was six inches in front of my cock. I had never been so horny in my life. I leaned forward and pressed my dick against my sister's lips. She looked up at me, as if thinking careful about whether to do it, but then she stood up. "Not yet," she whispered to me.

I was disappointed, but I understood. Things were moving fast and she probably didn't want to do so much sin at once. I was a little ashamed that I'd tried to get my sister to suck my cock, but I was horny out of my mind.

She squatted back down though, evidently okay to continue with a pussy eating from her aunt, and moaned as Olivia resumed licking. My sister was practically sitting on the fit 35-year-old woman's face. I could see Olivia's tongue lapping at my sister's clit now, and knew Christie would cum soon.

I sat down a dumbbell so I could jerk myself off. I had to. I stroked furiously and Christie stood up. I was worried she'd tell me even this was too much, so I made myself stop, but she whispered, "It's okay, just don't cum on my face."

Well, that was the kind of rejection I could handle! I jerked off hard as she squatted back down and moaned from Aunt Olivia's instant resumption, licking my sister's pussy eagerly. I looked down to see her tongue all over Christie's bald cunt, then focus on her clit.

I pointed my cock at my sister's tits and came with a loud groan. My sister didn't object as I shot ropes of cum on her big tits, she was too focused on grinding her pussy against her aunt's sexy tongue. Christie started to moan too, having a passionate orgasm and squirting her juices on Aunt Olivia's face. My sister was a squirter!

I picked up the dumbbell and did many more presses as Olivia stood up and licked her face clean.

"Wow, what a strenuous exercise for us all!" she said.

Christie and I grinned but then I realized my arms were on fire. I'd been lifting 25 pound dumbbells for 30 minutes at least. Insane incestuous horniness is quite distracting, it seems. Amusingly, Christie seemed to have the same experience as she wobbled bow-legged to the couch and collapsed. She'd probably held her squats for over ten minutes combined.

But you know what? No pain no gain. It was worth it!