She bent over soaping her legs. She had forgotten that though they were forced to shower together and he was her son .... he was still a man ... and in the current position he could see her entire womanhood open up like he had never seen before. Not even just seconds earlier.
He started to get hard. What was he to do? Here he was with a hard on for his mother. He just kept staring at her open labia and her anus, both seeming to beg him to be filled to the hilt. With his rock hand penis showing him the direction, it seemed he was pulled over, like an inescapable gravity. He hesitated. His dick was but a couple of inches from his mother's labia, his hand feeling the warm that seemed to radiate from her butt. She was still preoccupied by her legs and had proceeded to work on her feet with her knees perfectly straight, almost showing off her flexibility. It served to open herself more to him and to his delight. It seemed she was calling to him in some hidden way.
Yet this was forbidden. Something that even if she wanted it, she would never let happen. But putting his penis in her vagina against his mother's wishes and possibly shooting his load quick enough (after all she was liable to fight him off) so that any resistance would be slowed by first surprise and a few more seconds of confusion. He figured if he did it right (since he thought that he could probably blow his load right now), he could get off in maybe ten to fifteen seconds. Maybe three seconds of surprise, then three to four more of confusion. At which point she might try to get him to stop for a couple of seconds before trying to physically remove herself from him. He could probably hold on to her for a few seconds before she fought violently, he might even be able to talk her into inaction for a couple more seconds. All told he figure out this fairly quickly in his head that if he was quick to the draw then he can shoot his load on/in her.
He was suddenly distracted by her sudden shift backwards, which brought her labia to his dick, grazing him sending pleasant shivers down his spine. He couldn't take it and he saw his opportunity slipping ... did she feel that? Then grabbing her hips and rump suddenly and gently he pushed his penis into her vagina with a quick thrust.
* * * * *
A gasp caught her throat as she heard a moan. What was going on? She could feel someone inside her and he was quickly and roughly, yet with a touch of gentleness pleasing her. It felt good. But her husband was not here. Only her son. Her son.
Her son
! As she started to turn, she felt the hands release her rump and grab for her wrist. Oh, it felt so good. But she needed to stop, even if she didn't want to. Before she could muster anything her hands were being forced against the wall. They were rocking slowly and more gently now. This felt soo good, why did it need to stop. Because she loved her husband that why. But her ... its her ...! She needed to stop this, use her legs, something.
* * * * *
She was definitely fighting him, but he realized, not very hard. It seemed to make his mom feel good what he was doing ... if not whom it was from. He was lasting much longer though. And he wasn't getting the immediate results he had initially hoped for. However, his mom's pussy felt even better that he had hoped for. If he was to continue he needed better control, which ment pinning her body. Using his hips to make small circle so he wouldn't have to stop screwing his mother, he pulled her hands away from the wall. He brought her upright from the bent over position and pushed her against his body with her arms pinned against her warm breasts.