There are two large universities in the Oakland section of Pittsburgh. Shawn was a Senior at one of them. His sister, Sue, was a first year at one of the two small, mostly women's colleges also located there. Though they lived in Pittsburgh, they spent little time at home. Both had wanted to get the full college experience, including living in the dorms. Of course, they also liked the idea of getting out from under their parents' watchful eyes.
Shawn was also a member of a fraternity. This added a great deal to his party life. If living in a dorm had gotten him free of his parents' rules, pledging a frat had gotten him free of dorm rules. It also had gotten him a lot more alcohol and girls!
The women at the mostly female colleges depended on the nearby universities for their sources of men and parties. Being the good big brother, Shawn invited Sue over for many of the fraternity functions.
"Bring along your friends, too," he had told her. "Especially the hot ones!" he added, smiling. He not only was a good brother to his sister, he was a good brother to his fraternity. It was a real win/win situation for him.
His fraternity was not the most upstanding one on campus. Especially when it came to parties. They usually involved more drinking, drugs, and sex than the average frat. Often they were close to losing privileges with the university, but so far had managed not to. Shawn didn't mind involving his little sister in this, however. She had done a lot of all that in high school as well. She did not think of herself as a slut, but yes, she was a bit promiscuous. So was he. As long as she was willing, he was happy to let her.
The very first party he had invited her to, however, had nearly ended badly. Sue had arrived with a few of her friends when the party was underway. They were welcomed and noticed, as all hot girls are at a frat house. Sue was the hottest of her group. She was a tall, leggy blonde with a great figure and large breasts, which she enjoyed showing off. She loved watching guys fall all over themselves when she wore an outfit showing a lot of cleavage. She felt so powerful because of them. She never used the phrase, "My eyes are up here." She liked guys staring at them.
When the girls arrived many of the guys flocked to them, as they did to all of the good-looking girls. They were quickly offered drinks, and spent most of their time being passed around to different dancing partners. Sue got separated form her friends, seeing them only occasionally, but that was fine. She was there to meet guys, and meet them she did. Shawn tried to keep an eye on her throughout the evening, as a big brother should, but as the night wore on he lost track of her.
As a Senior, Shawn was expected to keep the members and guests in line. As he was checking the second floor hall around midnight, he saw a gathering of guys outside one of the rooms. Checking on them, he saw that there was a couple in bed in the room having sex, and the other guys seemed to be waiting in line for their turn at the girl. This didn't seem to be a good idea. But when he checked on the couple in bed he was shocked to find out that it was Sue.
He wasn't sure what to do. He stood near the front of the line of horny guys and said, "Did you guys know that is my sister?"
He didn't look happy when he said it, and the guys looked shocked. None of them was about to challenge him. He was a senior, as well as tall and well-muscled. They mumbled into the floor and broke the line, disappearing quickly. The couple in bed, though, were too enthralled with each other to notice. Shawn wanted to leave, but he also wanted to speak to his sister, since he did think this behavior crossed the line. Or did she even know that a line of guys were waiting to use her body?
As he quickly debated with himself, he found himself staring at the couple. Shawn couldn't tell who the guy was, as he only saw his ass pumping up and down. As he watched he could see his dick as it pounded in and pulled out of Sue's pussy. She was obviously enjoying herself, voicing her excitement with loud moans. Her legs wrapped around him, pulling him harder into her,
"Yes, yes," Sue yelled. She sounded close to her orgasm. He was grunting with the force of each thrust, and she grunted receiving his body pounding into her. Shawn suddenly realized that he was standing there watching his sister fuck, and told his feet to move. They wouldn't. He couldn't seem to pull himself away as the couple approached their climax.
Sue started calling out, "Oh, oh, yes, there, harder, yes, there," and then, "OH, YEEESSSS!" she screamed as she hit her orgasm. As her legs pulled him in deep so that he couldn't pull out, her pussy was clenching tightly on his cock, causing him to lose control. He started shooting his cum as he was held deep in her pussy. After a few spurts he collapsed onto her, then off to the side. When he saw Shawn he was startled and quickly covered himself up, but he was not embarassed. He smiled at Shawn triumphantly. Sue then looked up and said, "Shawn! What are you doing?" as she raised her knee to cover her pussy and laid an arm loosely across her chest.
The guy, a sophomore named Brad, said, "Man, why are you..."
Shawn interrupted him. "Do you know she is my sister?"
Brad stared at him for a long moment, then took a quick glance at Sue and scrambled out of the bed and the room, forgetting to even take his clothes.
"What are you doing?" she repeated, but this time she sounded pissed.
"Me? What the hell are you doing? Fucking every guy in the house?" Yeah, he was a little pissed, too.
"What are you talking about? I just made it with Brad and then saw you watching. Did you like it?"
He ignored the question. "Is Brad the only one you screwed?"
Sue was confused and still pissed at him. "What the fuck? Yes, of course he was. What do you think?"
He answered that one. "I think I saw a line of guys right here waiting their turn to fuck you."
They stared at each other, saying nothing while what Shawn said sunk in.