"Come on, brother dear," Tracy said, getting to her feet and pulling him up. "I'll piss on you. Let's find someplace so we don't make a mess, and I'll piss on you. Just point to the spot and I'll piss on it."
"I think Bill wants both of us to piss on him, darling," Susan said. "Is that right, Bill?"
Again he nodded, but not as shyly now.
With his mother and sister holding his hands, they moved quickly to the kitchen. "We can clean it up better here," Susan said. "Now, Bill, you just lie back and watch and have fun."
Bill sprawled on his back, looking up at them. His mother and sister were very excited about this, he saw. Tracy was straddling his head, squatting down until her cunt was a few inches above his face. His mother, too, squatted, but over his cock. As anticipation came over him, his cock started lifting into hardness again.
Facing each other, Susan and Tracy half squatted over Bill, and he stared from one hair-lined cunt to the other, waiting.
Warm piss splashed upon his cock and balls as his mother started. Tracy gave a soft moan, and her cunt released a golden stream that arced from her succulent cunt onto his chin and chest. As they pissed on him, Bill's cock swelled into powerful hardness. He groaned in ecstasy when his sister adjusted her cunt, and began to piss directly into his face. His cock and balls and his face were being drenched in the piss from his mother and sister, and Bill thought he would come off with the sheer pleasure of it.
Susan, watching his face being pissed on, gave a sudden cry and rammed her cunt down. Still pissing, she sunk her cunt onto her son's cock and began to fuck him wildly. She had not thought she could piss and fuck at the same time, but she was doing it, her ass racing up and down, her hairy, pissing cunt riding her son's cock with fiery wet heat.
Tracy, seeing her mother fucking Bill and still pissing at the same time, gave a yelp and slammed her cunt onto her brother's face. Bill clawed at her creamy ass and opened his mouth wide. For a moment he felt his sister piss into his mouth, and he had no choice but to swallow it. Then he started plunging his tongue into his sister's tight, wet cunt. As his mother fucked him, her hot pussy sliding up and down his throbbing cock, Bill tonguefucked his sister with a wild hunger of ecstasy. The taste of her piss on her hairy cunt sent darts of flame through his body.
The excitement was too much, and Bill began gushing into his mother's cunt, sending spurt after spurt of come into her. Susan wailed as her pussy gripped his cock, convulsing powerfully. Tracy began to grind and press against her brother's face, her sugary cunt closing tightly about his tongue as she, too, came in waves of steamy pleasure.
Susan and Tracy slumped as the orgasms stopped, and then fell next to Bill. They began writhing their naked bodies on the piss wet floor, hugging and kissing heatedly.
"I'm next!" Tracy yelped. "I get pissed on next!"
"Whatever you want, you get," Susan laughed, wrapping her arms about her son and daughter, wiggling her naked body sensuously between them. "Anything we want, we get."