Ben stared at his mother, seeing the shadow of her thick cunt hair through the flimsy panties, the slit of her pussy outlined there, the wetness that was forming. Julie's eyes burned on her son's cock.

Of her twins, Becky appeared the more aggressive. Her blue eyes shone brightly, turning from her mother's crotch to her brother's uplifted cock. Julie's robe was open from her waist down, her panties apparently exciting both twins. She found it odd that there was no feeling of shame, neither from her twins or herself. She didn't question it, though. She was enjoying every second of this.

She said nothing as Becky shoved her brother across the couch, forcing him to his back. Julie's eyes remained on his uplifted cock, her mouth watering. Ben kept his head turned toward his mother, staring at her wet crotch, Julie said nothing when Becky stood on her knees, pulling the wide legs of her sunsuit open, then the crotch of her panties. She couldn't see much of her daughter's cunt, but she knew it was fully revealed. She felt, vaguely, that she should stop this before it went any further, but she didn't want to stop it. Her cunt was burning.

With deliciously naughty giggles, Becky squatted on top of her brother. She grasped Ben's cock with one hand and, holding her sunsuit and panties to one side, began to rub her young cunt back and forth on the head of his cock. Julie's eyes smoldered as she sat trembling with desire, watching them.

Apparently Becky and Ben had been doing this for some time. Julie didn't care. Her excitement was swelling to the point that her ass writhed in the chair. She strained her eyes, trying to see her son's cock rubbing at her daughter's cunt. There wasn't much she could see, and that irritated her. Her cunt was fiery and wet, and she wanted to see everything.

Ben was still gazing between her thighs, lying almost passively as his sister rubbed her cunt about the head of his cock. Becky was giggling and panting, glancing at her mother as if expecting Julie to stop then.