[This story involves adult family members of age 18 years or more with straight and bisexual inclinations. To enhance your reading pleasure, it is suggested but not required that you read Part 1 through 8 of this series. Thanks to LarryInSeattle for his tremendous help with editing]
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It has been a great Saturday for the Sullivan family. Son, Carter kicked off the day by shoving his cock into his mom, Cathy's pussy from behind. This led to dad, John, and daughter, Carolyn joining the family play. After a small rest break, the family resumed their fuck games. The last session concluded with Carter filling his mom's ass with his cum. This prompted dad and son dialog on exploring their bi side where they agreed to get some bi-action during the next play session.
The family enjoyed another warm evening. Cathy and Carolyn set up the dinner in the back yard. The family chatted, drank wine, and ate tasty home cooked food. It started getting dark and every one decided to go in for the evening family session.
The family gathered in Cathy and John's bedroom. They had a king size bed with a big sofa in the bedroom, so there was a place for everyone to sit. Within minutes, clothes were off.
"Ready for something man-to-man, son?" John asked.
"I think I am," Carter replied.
Carter had been fucked in the ass before. However, his dad's thick cock was little bit concerning to him.
John applied some KY jelly and moved against Carter. He lined up his cock with Carter's hole. The moment he slowly pushed his head into his ass, Carter felt slight pinching on the rim of his ass. It was true that all the cocks his ass had enjoyed before were nothing compared to his Dad's. Carter tried to loosen up as much as he could in preparation. John continued to push his cock slowly into his asshole until it was half-way in. Suddenly, he thrusts his hips forward and pushed the rest of his cock deep into him. Carter gasped sharply, as he felt pain in his anus as his dad pushed forward until his whole cock was swallowed up. He wiggled his ass to accommodate the heated meat of his father. There were clear signs of him being a little uncomfortable.
John knew it was one way street from that point. So he started to thrust in and out of Carter's ass. The initial pain quickly faded and turned into pleasure. Carter felt the walls of his rectum squeeze tight around his dad's cock. He soon felt the first spurt of cum sprayed into his ass. John thrusts once more and some of cum started overflowing down his legs. John completely emptied himself into his son's asshole and then slowly pulled out with a slight pop.
John guided Carter up as he knelt down and took his cock in his mouth. He moves his son's cock around in his mouth. His nose pressed against Carter's body as he deep-throated his cock.
"Oh fuck!" Carter blurted out.
His sister, Carolyn was great at giving head but that was a whole new experience for him. Very soon, Carter emptied his load into John's throat. John sucked him dry and then licked his head, circling his tongue around it, prying into his slit, before taking the cock out of his mouth.
John lay down on the bed on his back. He spreads his legs wide open, giving a perfect view of his cock, balls, and asshole to Carter. Carter went in between his legs and propped his legs over his shoulders. He slid his cock into his father's ass and began to fuck him.
