This is a fantasy my girlfriend's had for some time about finally fucking her younger brother. It hasn't happened yet but we are hopeful that it soon will. I thought it was hot and, with her permission, am sharing it on Literotica. Names are changed but all else is as she wrote it.
Carla's brother Hud was having his 50th birthday and she wanted to do something very special for him. Though it was not entirely what she really had in mind, she offered to make him a nice dinner; suggesting to do it at her boyfriend Mark's house, mostly because Hud's place was so small.
To allow her time to prepare dinner, Mark drove out to Hud's house about an hour away to pick him up. Hud got in the car and said, "Man, I hope Carla's got something good for my birthday treat." Mark replied, "Well, I know she's been working on it a while now" and chuckled in that lascivious way Carla loves so much. Hud looked at him funny, but with both of them knowing what a good baker she was, figured it was something yummy. Oh, it will be yummy all right.
During the ride, Mark and Hud got to talking. Mark steered the conversation to Carla and about their shared fetishes, casually mentioning that Carla was really a great cocksucker. Hud was a little uncomfortable talking about his sister like that, with her own boyfriend, but soon got into the mood himself.
Mark said, "Carla has mentioned from time to time about your childhood activities -- like the time you guys went in a closet, closed the door, and you sucked on her tits. She said she really loved it, but was afraid to love it too much! She's often mentioned she wished she could have continued to see what would have happened."
Hud's cock began to get hard and he was having a hard time covering it up, and Mark noticed. "Just to let you know, Hud, she and I have a great sex life and we're very honest and open about our fantasies. I have made a couple of her fantasies come true."
At this point, Hud was eager to hear about these fantasies. He had always had a desire to fuck his sister, maybe this was as close as he could get -- hearing about her fantasies and secret desires. He had a hard time believing Mark wasn't upset about what they had done as kids. But here he was, talking about it like it was a normal, everyday occurrence. Mark saw the look of confusion on Hud's face and said, "You know, I messed around with my sister, too. I wanted to fuck her so bad, but just couldn't. I loved masturbating my cock on her pussy. Did you ever do that with Carla?"
Hud was stupefied to hear that someone else was fucking around with a sister and felt a little more at ease talking about it. "No, but I did come into her room one night, unzipped her housecoat and sucked on her tits. She was squirming a little bit, and I pulled down my pajama bottoms, pulled up the housecoat, and put my cock between her legs and pumped a little. It felt so good and I wanted to get my cock up inside her pussy, but we didn't want to wake anyone up, so we didn't do that. But she would constantly come to my room when I wasn't there, lay on my bed like she was asleep and wait for me to come in and then let me suck and fondle her tits."
Mark started getting hard at that point, and asked if he ever got to fuck her. Hud said, "No, but damn, I haven't had sex in the three years since my divorce, and I'm so fucking horny. I'd sure do her if I could."
"You know, Hud, I know Carla well enough that she might be open -- and I mean that literally -- to playing with you. With me watching and even joining in, if that's what you wanted." Hud was having a hard time believing this, and couldn't wait to see what Carla had in store for them -- both on the table and maybe in other ways.
They pulled in the driveway and could smell the good dinner she had prepared, as well as his favorite cookies. When Hud came in the kitchen to give his sister a hug and a kiss, he immediately noticed that she was wearing a pretty white blouse that was almost sheer enough to see right through. It was obvious that she was bra-less and her nipples were visibly hard. He wanted to reach out and caress her breasts, but instead gave her a hard, long hug making sure she could feel his cock as he held her tightly.