This is a stand-alone story, but will be more enjoyable if you read the first two parts.
Chrissy and Tom were standing by Tom's pool, having just returned from a Friday overnight date. They were watching Tom's wife Lori and Chrissy's husband Bob fuck in Tom and Lori's pool. Lori had arranged the date between Chrissy and Tom as a birthday present to Tom, knowing that Tom had the hots for Chrissy, a short Latin beauty, and Chrissy for Tom. Lori and Tom had swapped with all the others in their swinger's group, but she was not attracted to Chrissy's husband, Bob. So, while Tom took Chrissy to a downtown hotel, Lori had invited Randy, Jill and Bob over to Tom and Lori's house. Randy and Jill were the first couple with whom Tom and Lori had swapped. Lori had intended that she would get to fuck Randy and Jill would fuck Bob. Chrissy had bet Tom that Lori would end up fucking Bob.
Lori and Bob were naked in the pool on the steps of the shallow end, although Lori was still wearing her silk collar that had "TOM" embroidered on it. Lori sat in Bob's lap, arms around his neck, kissing him as she slowly rode up and down on his cock. Bob had one hand in between them, rubbing her clit. His other hand was on one of Lori's plump B cup titties, pulling on her nipple. Chrissy laughed and turned to Tom.
"Looks like I won the bet," said Chrissy.
"Yes, it does," said Tom. "But don't say anything until I have a chance to talk to her."
"OK."
Randy was naked in a deck chair getting a blow job from his naked wife, Jill. She had her red, shoulder-length hair tied in a ponytail. Jill got up and walked over to Tom. Randy turned his head toward Tom and Chrissy.
"You two are overdressed for the pool patio," he said.
Tom had made it a rule that the pool area was no clothes only. Chrissy pulled the ruffled shoulders of her white dress off her shoulders, baring her brown upper body. She turned her back to Tom.
"Will you undo me, Tom?"
Tom undid the clasp at the top of Chrissy's butt and pulled the zipper down. She pushed the dress down off her firm ass and muscular legs. She shook her head, tossing her long, dark brown hair behind her back.
Naked now, she sauntered over to Randy's deck chair, her white heels clicking on the concrete. She took off her heels, threw one leg over Randy's torso, stuck one of her firm C cup tits in Randy's face, and grabbed his erect, fat 9 1/2 inches. She placed it at the entrance to her pussy, and sat down on it, taking it all.
"Ohhh, shit, Randy, that feels good."
Meanwhile, Jill unbuckled Tom's slacks and pushed them down as Tom kicked off his shoes and pulled his golf shirt over his head. Now he, too, was naked. Jill put her arms around his neck and kissed him, rubbing her plump titties against Tom's chest. She pulled her 5'4'' frame up
on Tom and wrapped her legs around his back. Tom grabbed her firm ass cheeks, one in each hand. She untied her ponytail and shook her red hair into fullness, then tossed her head sideways to get it out of her eyes. She grabbed Tom's now hard 7 inches, putting the fat head against her dripping pussy. She sank down on it.
"Hi, Tom," she said, as she started humping up and down on his dick. "I've been horny all morning waiting for you to get here. I'm gonna cum on your dick pretty quickly."
In the pool, Lori and Bob broke their kiss. Lori started moving faster.
"Shit, Bob, fuck my pussy! Harder," said Lori.
Now all three women were in a man's lap, riding his cock. This continued for 20 minutes or so. Jill liked fucking Tom, even though his cock was shorter than Randy's, because his dick just reached her cervix. Randy never got his dick all the way into her pussy. Chrissy liked fucking Randy because she was an admitted big cock slut. Lori had previously avoided fucking Bob except at house parties. All three were now bouncing up and down vigorously on hard cock.
"Fuck, Bob, you're making me cum again," said Lori. "Shoot me full of cum." Bob only had a 5 1/2 dick but was known for his skill with it and his big loads of sperm. "Fuck, fuck, fuck, I'm cumming!"
Randy was known for his endurance, and Chrissy was multi-orgasmic. She had been cumming about every two minutes bouncing on Randy's prodigious member.
"Fuck my cheating pussy, Randy," said Chrissy. She said it loudly so that Bob would hear her. "Fill my married cunt full of bull cum." She knew that Bob had a cuckold streak in him and said it for his benefit. She came again. Then she stopped moving on Randy, soaking on his dick, enjoying the fullness of his big dick in her cum-filled pussy.
Jill bit Tom's neck.
"Shoot your sperm in my sloppy pussy, big boy. I need to feel you spurt in me."
"Oh shit, here it comes, Jill!" Tom's dick spasmed 6 or 8 times as he shot cum into Jill's pussy, which was already full of cum. Jill, who was also multi-orgasmic, began to squeeze his dick as she, too, came. She slowed her humping. Tom lifted her off his cock, carried her over to a deck chair next to Randy and Chrissy and set her down in it. He walked over to their outside bar, reached underneath it where they kept an ice chest with bottles of water and grabbed a couple. He took them over to Jill, sat in a chair next to her, and gave one to her.
Jill opened the bottle and took a long draw of water.
"How was your date?" said Jill.
"Chrissy and I had a great dinner, and a few drinks."
Jill laughed. "No, silly. After dinner."
Tom giggled. "Yes, Jill, we fucked each other silly. I had a great time. I hope to do it again, if Lori will let me."
"What about you, Chrissy?"
"I had a great night, too. I even got double fucked. Tom and the room service guy dp'd me. And the room service guy was hung, too!"
Lori and Bob had come out of the pool holding hands and were now standing with the others.
"I thought you weren't going to fuck Bob," asked Tom.
Lori's face broke into an embarrassed smile. She cast her eyes downward.
"I wasn't," she said. "But Randy wanted to fuck my ass while I was sitting on Bob's cock. And I was cumming soo hard. Then Randy came in my ass and pulled out. Bob kept fucking me. He made me cum and cum and cum. And he poured buckets in me. Cum was coming out of my pussy around his cock. I'll fuck him anytime now, if you'll let me."
"So why did you have me bring Chrissy here instead of taking her home?"
"We decided to have an impromptu party. Everyone is staying for dinner and then we are doing round 4. Is that ok?"
"4?"
"This was round 2," said Lori. "We did round 1 after breakfast. We're going to do round 3 after we all have a drink. Can we, please?"