Subject-0

Carol moaned as she slid the vibrator deeper into her sopping wet slit. Her right hand was pinching her left nipple, and rolling it between her fingers, as she came on the device between her legs.

She shook off the last vestiges or her orgasm, and not for the first time wondered what had changed in her. She had never been a very sexual creature before, but over the last few weeks she had found herself increasingly aroused. She had even gone so far as to purchase the toy that was still vibrating inside her.

But that wasn't the worst of the changes. The worst part, the part that she couldn't admit out loud, and only admitted in her deepest desires, was that she was fantasizing about her son, Adam, when she masturbated. She had tried to fight it at first, but every time she got excited, it was around him, and at night when she finally gave into her desires, it was to thoughts of him that made her cum. Sometimes she had to gag herself to stop from screaming out his name. The only pattern she could discern in all of this debauchery was that it tended to happen more on the weekends, than during the week. She attributed this to her having weekends off and so was around her son a lot more often, and thought no more of it.

She knew it was wrong to have such thoughts about her own blood, and she had absolutely no intentions of following through on any of her thoughts. They were for her alone. She would never treat her son as anything less or more than her son. She was his mother, and despite her fantasies, she was determined to keep their relationship that way.

She was just glad that tomorrow was Monday, and she could get back to work. She was also glad that Adam was taking his sister, April, back to her apartment right now. If she hurried, she would have enough time for one more orgasm. She used what she had seen earlier that day as her mental fantasy.

April stepped into Adam's room, her face red and flushed. He didn't care that she hadn't knocked, he was just happy to see the object of his thoughts.

"Quick, get undressed. Mom went to do some grocery shopping, so we have enough time for a quick fuck." This is how it has been for the last few weeks. On the weekends when April was visiting from college, they screwed every opportunity they had. During the school week, while he was finishing up his senior year in high school, and she her sophomore year in college, he would take trips out to see her, and fuck both her and her roommate, Minnie. It was an ideal life for Adam, and his one complaint was that they had to hide everything from their mother. "Are you going to just sit there, or do I need to rape you?"

Adam grinned at the thought. She was much smaller than him, and they both knew she couldn't force him to do anything he didn't want to. Making love to his sister WAS something he wanted to do, however. He was soon undressed, and joining his sister on the bed. He crawled over her, kissing his way up her, till she complained, "We don't have time for foreplay, Squirt. Not this time. I'm already wet enough, just stick that huge cock in me and make me cum."

Adam loved the way his sister talked. His lips met hers, as he braced himself on his elbows. He felt her hand snake between them, and grab hold of him. She started to rub his head against her undeniably wet lips, spreading some of her juices to him. Unable to hold back any longer, he thrust his hips, and sank halfway into her in one go. After nearly three weeks of fucking, she had started to finally get used to his girth, but she still felt extremely tight to him.

"Oh, Gawd, I love the feel of your cock in me, Squirt. Every time it feels better and better!" Adam started to kiss her neck, breathing in her scent, and picking up his pace. "Ah, I finally have you all the way in me. Now come on, make me cum all over that massive prick of yours! Make me scream as my cunt leaks around your pecker."

Adam started to pound into her, their pelvises slapping together loudly, as April's words became incoherent, and turned into one long moan.

Adam knew the second his sister came, as her pussy became both tighter and wetter around him. He rolled them over onto his back, and was satisfied as he went slightly deeper into her. This was his favorite position, and he knew he could make her pass out sometimes from her orgasms, as he pounded into her.

Carol swore softly under her breath. How could she forget her shopping list? She had set it right next to her keys so she couldn't forget, but her head had been so frazzled by thoughts of lust all day, that she had grabbed her keys and walked straight out. She hadn't realized she had forgotten it, till she reached the store.

Opening the door to her house, she caught a scent she had been noticing a lot lately, but couldn't pinpoint. Her knees grew weak, and her crotch began to itch inside. She tried to push her body's desires aside as she went for the list.

She heard a low moan down the hallway that was unmistakable in its sexuality, and Carol hoped that she was wrong about what might be happening.

As she walked down the hallway, the scent grew stronger, and the sounds of sex were really starting to get to her. She couldn't stop her hand from squeezing her breast as she walked. The sounds were coming from Adam's room, and she noticed the door had been left cracked slightly open.

She nearly came in her pants at the sight that greeted her through the parted opening. Her daughter was riding on top of the thickest cock Carol had ever seen. Her son's arm was across April's back, holding her down, while he thrust up into her violently. His mouth was locked onto one of her large breasts, and his other hand was pulling her hair back, making her arch her back and push her chest into his eager mouth as she moaned in wanton delight.

Her children were committing incest! It was one thing for her to think about it, but another thing to actually witness the depraved act. She should go in there and put a stop to this. She should tell them how wrong what they were doing was. She should... She should... She should pull her fingers out of her pussy, and stop masturbating to the scene before her.

Carol couldn't believe her own reactions to what she saw. She tried to take her hand out of her pants, but as her fingers brushed her clit, she came hard, and barely stifled a gasp as the orgasm overcame her. Her fingers dove back into her box, as she came on them again and again.

She knew she needed to put a stop to what was going on in there. Looking in again, her eyes zeroed in to where their two bodies joined. Adam's balls kept slapping April's ass as he slammed his hips upwards. April's fluids were leaking copiously around the massive penis that was causing her daughter so much pleasure. Carol wondered what it would be like to have that stiff piece of meat pounding her, and knew then that she couldn't enter that room. She would never be able to stop what they were doing. She knew that her worst fears would be realized as she would want to join. She could never allow herself to cross that line, even if these two had. She had to remain the responsible adult; the adult that right then had three fingers buried as deep into her coochie as they would go, and was bringing herself off to her second orgasm.

As soon as she could trust her legs under her, Carol stood and left; the sounds of Adam losing his load into his sister following her out.

Adam tip-toed through the house to his bedroom. His mom was fast asleep, for which he was grateful. He had spent longer than he had planned at April's apartment, screwing both her and Minnie. Neither one would let him leave till they had each had a load from him. He was just thankful for his quick recovery time, and their sexiness.

He peaked into his mom's room, and felt himself get hard. She was lying naked on her bed, a vibrator lying next to her. Stealing himself, he entered slowly, so as not to wake her. He wasn't trying to get a better look at his mom; he was more concerned with covering her up.

He couldn't deny that even at almost forty, his mom had a great body. Her breasts more resembled Minnie's than Aprils, and she had a light tuft of brown hair at her crotch. Adam could see the slight glistening of juices around her labia, and the unmistakable smell of a woman aroused. He noted that it too was closer to the smell of Minnie, vs. April, and wondered at that. Maybe April and him truly were test-tube babies.

He had to readjust himself before he could pull the covers up over her sleeping form. She moaned in her sleep, and Adam wondered what she was dreaming about as he noticed fresh liquid seep from her crotch. He debated on moving the vibrator, but didn't know where it went, and didn't want her to know he had been in here.

As quietly as he entered, he slipped out, and went to his room. He was unable to fall asleep right away, and realized he needed to rub one off, if he wanted any slumber. His mom had got him going again.