After our last round of playtime, we were all pretty much fucked out. So we had a swim in the pool, followed by a second lunch, which we ate at the poolside. We talked about the concert that Jack, Bob, and Rosie had gone to, and what they were taking in school, and so on. I had a good chance to look at the junk on the twins, and noticed how their balls hung lower than the ones on me and my Dad, and how their dicks didn't get any shorter when they were soft, like mine and Dad's did. Somehow, the subject of sex didn't come up again, but the women disappeared into the kitchen for a while before reappearing. Rosie came back out first.
"What were you talking about in there?" I asked her.
She smiled and said, "You'll find out!"
Then Mom and Lori came back out. Mom got our attention and started to speak.
"Once in a while, when we have enough people, it's a family custom to have an orgy. That's right, everybody fucking everybody! Well, we have eight people here. I think that's enough."
Lori explained the rules. "First, this particular game we'll be playing is all about cocks, cunts, and cum. That's the focus, and not the closeness you get with your partner when you screw. The rest of our family fucking is about that. But here, the whole idea is that when you're getting a succession of cocks in a row, or cunts in a row, it's the variation that excites you. Linda, you have something to add?"
"Yes, I do," Mom replied. "This comment is for the young ones here. I know Jeremy has seen Gary and Dee fuck. And Gary and Diane and I have shared a bed last night. And maybe Lori has had her kids in bed, right? But those were all for extended sessions of lovemaking. That's not what we're going to be doing here."
She paused to take a sip of water, and then resumed. "You've got to understand that this is different from the family lovemaking we do. This is strictly an exercise in pleasuring cocks and cunts. Maybe tomorrow, or sometime later, we'll do another kind of orgy, a more free-form one where we take turns pleasuring each other without a timer around. But this is more of a game ... a relay race, not a school dance. Understand?"
I nodded, and the girls and the twins did, too.
Mom finished off her drink and spoke again. "We've all had at least a couple of fucks by now, so none of the guys should be on a hair trigger, and all of the gals should be most of the way to a good buzz. Let's all go to my bedroom, and we'll start. First, though, we've got to get all the guys hard again!"
Rosie grinned at me. The boys looked at each other, and then at her, and then at Diane. It was obvious that they were as clueless about what was going to happen as I was. Dad brought out a box of about a dozen cock rings, all in different sizes. He slipped one onto each of our dicks before they were fully hard. "Better a little too tight than a little too loose," he instructed as he slipped one onto his own cock. "And those are yours to keep! A souvenir of the boys' first orgy! Now girls, get us guys hard, so we can test the fit!"
"What do us girls get?" Rosie asked.
"Nipple jewelry!" Mom said, as she held up a box of her own. She passed them out, and each woman got a pair of nipple rings, designed so that they could be adjusted to any diameter the girls wanted. There was a lot of giggling as the ladies slipped them on their long nipples and clamped them down. "Not too tight at first," Lori instructed. "The more you get turned on, the tighter they can get, but be careful not to constrict the blood circulation." Diane and Rosie looked at each other's bejeweled breasts and giggled.
In the bedroom, Mom explained the ground rules. "First, it's going to be the ladies' turn. Lori's going to get on the edge of the bed and have each of you guys fuck her in turn. You each have five minutes, or until you feel you have to cum. That's when you're going to turn it over to the next guy. If you cum, you're obviously out of the game. We're going in order of age... first Gary, then... I forget. Which of you two boys is older?"
"Bob is," said Jack. "By about ten minutes!"
"You go ahead, bro," said Bob. "It's time you get to pull rank on me!"
Lori spoke up. "And, Linda, you go ahead of me. You're the hostess!"
"If you want," Mom replied. "So the four guys will fuck me first, then they'll fuck Lori, then Diane, and then Rosie."
We all nodded.
"Let's get started, then." Mom resumed. "First Gary, then Jack, and then Bob, and then Jeremy. OK, let's start!" And she lay down on the bed so that her crotch was positioned right at the edge and spread her legs as she started the timer.
Dad was inside her in a flash, and they pumped merrily away for the full five minutes. It was fascinating to watch Mom's breasts bounce back and forth on her body, recoiling with each thrust, the nipple rings looking like little boats on a rolling sea. Then the timer sounded, he pulled out, and Jack took his place as Lori reset the timer. He, too, lasted the full five minutes, and Mom was well on her way to an orgasm. Another chime of the timer, and it was Bob pumping her and sending her into her climax. The vaginal contractions he felt on his cock must have been disquieting, because Bob pulled out before his time was up. "I couldn't last the full five minutes!" he admitted sheepishly.
"Did you cum?" Lori asked.
"No, Mamma. I could feel when I was starting to get close."
"Good boy, son! I'm glad you saved some of that stiff dick for me!"
And then it was my turn. I was thankful for my previous four orgasms of the day, because I had no trouble lasting out the full five minutes. Anyway, my mom's cunt was familiar territory to me by now.
After the first round, it was Lori's turn to be gang-banged. Again, Dad took the lead, giving her the full five minutes as I watched Lori's boobs ripple, so much like Mom's. Then Jack, doing the same. When it was Bob's turn, he had no trouble lasting the full term, I guess because he was used to his mom's cunt. I ended up the round, again able to last the full five minutes. Lori had been holding her own orgasm in check to keep from overstimulating her boys, but now she let it out full force, and she let me know by gripping my cock with her strong vagina muscles.
By now we were all sweating, and Mom brought in bottles of water for us. Now it was Diane's turn. It was her first experience with a gang-bang, and she gave a nervous giggle as she positioned herself on the edge of the bed, spread her legs, and regarded the four boners ready to fuck her. With a smile, she let her dad have his way with her for the full term, after which Jack gave her a rollicking fuck as she succumbed to an orgasm. It was apparent to me that those cock rings were doing their job in extending their stamina. Bob was next, but again he pulled out before reaching the full term. I took his place at my sister's cunt and we laughed as we fucked. Her second orgasm swept over her just as the five minutes expired. "Thanks, bro!" she said as I pulled out.
"Last round," Mom said. "Are you ready, Rosie?"
The girl nodded, and took her place on a bed that already had a gigantic wet spot. She also giggled nervously as she looked at her brothers' erections, and I suddenly realized that they'd never fucked before. Was she OK with this? And than I remembered how she'd had that talk with the girls in the kitchen earlier. They'd asked her and gotten her permission for this, I realized.
"The only difference between this round and the previous ones is that you guys can cum," Lori said. "In fact, if you last the full five minutes, it'll be a miracle!" Everybody laughed, including Rosie.