She looked at Robert's balls dangling between his legs, and despite the lack of hair on them, they were big. Kathy found herself wanting to touch them, fondle them. But she wasn't going to do anything about that. She wasn't about to let them know her interest. She was too humiliated for one thing, and for another they were younger than she.

"Want me to make you come on my pussy, Robert?" Kathy heard Cindy asking. "I'll jack your cock off and make it come all over my cunt!"

Cindy, still squatting above her brother's throbbing, straining cock, reached between their bodies and began to jerk him, the head of his prick pressing against her clitoris. Kathy saw the shivers of delight ripple through Cindy's thighs and naked little ass, and she knew the girl loved this. Kathy writhed her ass about in the chair, trying to squeeze her thighs against the throbbing sweetness of her burning clitoris. She bit her lip as she watched, her dark eyes glowing with the heat of her excitement.

She no longer felt horrified by what was happening. Instead she was very excited by it. She had never seen two people playing with each other this way. Watching Cindy hold her brother's cock head against her clitoris and jack him made Kathy tremble with a hot, intense desire.

Cindy squealed with delight as she pressed her clitoris against her brother's cock, jacking her fist up and down swiftly now. Robert's balls bounced with her energetic jerks, and Kathy was thrilled just by watching this! The come juice on her thighs had been left there, and it seemed to Kathy that the juice burned like a branding iron into her flesh.

Her cunt was writhing hotly, the lips tightening, her clitoris inflamed almost painfully, as Kathy stared at Cindy's sweet little ass moving slightly. The head of Robert's cock was held firmly against Cindy's clitoris, and Kathy was surprised that it did not slip into his sister's cunt. But Cindy seemed to know what she was doing. The head of his cock remained pressed against, her throbbing clitoris as she jacked him faster and faster.