Jim was now laying in the middle of the two girls and they were all breathing heavily from the earlier exertion.
"That was the best in a while!" Shara said. "I'm glad we make you happy Jim." offered Shari.
"But next time I get to be in front," Shara said playfully, "and that reminds me, I have a reward for letting you take the front twice in a row waiting for me..."
Shara rolled over onto her hands and knees, while Shari sat up on the other side of the bed as though to watch something. Jim was lost again, what did they mean by "double"?
"Jim, are you feeling ready yet?" Shara asked, shaking her heart shaped ass in the air a little, "I'm ready to be filled by you like no other man can do..." she pleaded. Jim figured it out, by double she meant two dicks in one twin. Her pussy was probably too tight for both to fit in just that, so she had to mean filling both her ass and cunt.
Surprisingly enough, Jim was just about as ready to go as before the twins had mounted him, so he got on his knees and place both dicks at Shara's welcoming orifices. As Jim entered her, she let out a cry of pleasure from the feeling of double penetration from a set of the largest dicks around.
"So filling..." Shara seemed on the verge of orgasm already, and Jim was just inches into her. He started to make the journey in, pushing forward slowly and Shara moaned in response to every movement. Obviously, the twins enjoyed anal sex as much as vaginal sex. She was so tight, almost a perfect fit for Jim's enlarged and doubled equipment.
Jim bottomed out, all fourteen inches in both her cunt and ass, and began to thrust while Shara drank in the amazing feelings filling her body. Jim felt her body tense with the fourth orgasm of the evening, and move quickly towards a fifth.
...
The watching Shari was visibly aroused, and masturbating herself slowly, entranced by the sight of Jim pulsing into and out of her sister for almost forty minutes now.
Shara's seventh orgasm caused her muscles to squeeze down on Jim's dick and finish him off. The twin fountains of cum poured into her for almost two minutes, before Jim slid out of her ass and cunt with a slick audible pop.
Sun May 27 18:41:01 2007