It was all orgasm now as he began his last furious strokes.
"I'm going to taaake you!" he cried in orgasmic delight.
The door of the library burst open. Babs, his sister, staggered in. She wore a Smart Suit that was transparent against her naked body. She glittered and gleamed like a showgirl in some outrageous sex display.
"Help me! Oh, Jimmy, help me!"
Right at the door of orgasm, dry-throbbing and crazy to throw his seed, Jimmy jerked up and looked at his sister. She came across the library in a peculiar fashion, first taking a few steps and then stopping to hold her crotch and make lewd sex motions. Then she staggered forward.
For a moment, Jimmy was shocked out of his skull to be discovered like this, fucking the girl robot. He quickly saw that Babs' distress was so great that she hardly noticed.
She reached the sofa and stared down at him with eyes that bugged out of her head.
"It's – doing it – to meeee!" she wailed. "Make it stop!"
"What?!"
She pointed at her belly. Even as she did, she had to undulate her loins. Jimmy saw that she sweated inside the suit, making the plastic hug her figure tightly. In his sexed up mood, she looked like the sexiest human he'd ever seen, her round tits exposed and hard, her rich belly a-quiver, her dark pubic hairs plastered to her juices, which also gleamed on her rounded inner thighs.
He knew what had happened. There was a sleeve on the suit that went up inside the woman and could act like a cock if you hit the right controls. She was being masturbated – fucked by the suit. She had panicked.
"Excuse me," he said to the robot.
"It's all right," said Nancy sweetly.
He pulled off the robot with a gasp at the cold air on his cock after her warm passage. He felt the frustration of interrupted sex. But he gallantly felt around his sister's pelvis to find the control to stop the action. Her body heat was fantastic. His hands slipped on her cunt juice some of which penetrated the suit, as it was supposed to.
He found the control. He stopped the sleeve.
"Ohhh," she said, "ahhhhh, that's better." She came down off her toes.
He pushed another semi-hidden control which peeled back a thumbhold of the sleeve. He eased it out of her, sliding it back into her crack, like you were supposed to do when you no longer needed it.
"Ahhh, gooood," she said.
She collapsed on the sofa beside him.
"I was so scared. It was a weird, crazy feeling – like having it done."
"It looked like it was fun," he grinned. He enjoyed seeing his sister nude. Back when he'd first gotten sexually hot he'd had crazy ideas about jumping Babs, because she was a pretty good looking doll, but he soon found out that incest didn't appeal to her.
"It looks like you've been having fun too," she said with a grin.
"Just trying it once, like you were."
Brother looked at sister. There she was, her cunt exposed, looking like a million dollars in that glittering SS, all sexed up and luscious. Sister looked at brother. There he was naked, cock hard, streaming with the fake girl juice of the robot.
He grabbed her and pushed her down on the sofa in the other direction from his current love.
"You're just in time," he kidded. "I haven't come yet."
"You're too late," she laughed. "I just escaped coming."
She shoved him back but he returned and boldly gripped her pelvis driving two fingers into her soft, wet cunt that was now exposed.
"Jim-meeeee," she cried.
"I can always do it to the robot. Here you are all hot and ready."
"I'm not all hot and ready. Oh, oh, oh."
She bucked on his fingers, holding his arm, trying to escape. Yet he sensed there was something different about her. Her normal resistance was down. She was an aroused, feral female who'd just traveled close to orgasm, and it was possible – just possible – that he could fuck her!
"Cut it out!" she said, struggling.
"Sorry," he said. "I thought you wanted fingers." He pulled his lubricated fingers out of her soft, velvet tunnel. "What you really want is cock!"
He pushed her down and got on top of her. She squirmed but he got a leg between hers and opened her V. He dug his cock wildly – and had luck. He notched her cunt. He drove his brother cock up into her cunt. They hung there a second, face to face.
"Oh, Jimmy!" she wailed. "We can't do this. It's incest."
"Who'd ever know?" he gasped. He was hot enough to fuck a wall. He dug his cock up into her guts all the way.
"Oh, oh, oh," she went.
She struggled but without conviction. She was as hot-blooded as he was, but had a woman's normal restraint. In fact, there had been a few times in her life when he could've seduced her, but he was too dumb to know it.
"Don't, don't," she gasped, thrilling to the incestuous cock.
"I won't, won't," he laughed. "Unk. Ahhh."
After about five strokes he knew he had her. Her eyes rolled back in her head and she canted up her belly for his driving cock.
"Jimmy, Jimmy, this is so wrong."
"And it feels – soooo gooood!"
"Ah, it does. Ah, ah, ah. You're fucking meee."
"All the way!"
His deserted robot love lay as he'd left her, legs apart, cunt slowly drying, an expectant smile on her lips. She would stay just as hot as she was until he finished in her or turned off her seduction cycle. The thrill of the forbidden incest had driven all thoughts of the robot out of his mind.
Jimmy laid down on his sister. The SS startled him. That sexy covering her body felt more naked than if it wasn't there. He felt her heat and moisture, her shift and quivers as amplified.
"Suck my breasts!" she gasped. "Fuck me harder!"
The suit enriched her sensations also. Her brother's body seemed to burn into her with heightened, smooth sexiness. She was almost out of her mind in pleasure. The suit had left her high.
He ate her tits one at a time, kneading the other one. It was fabulous. Her nipples were hard and electric in his mouth, against his palm. She seemed to feel it to the core of her being. She grunted and moaned and thrust on his prick as hotly as the robot had. "Oh, oh, oh. I… have to… come!" she moaned.
He thrilled to his marrow. He felt her soft body strain up, and her eyes got big.
So far he'd been afraid to kiss her. But her wet mouth curved in a rictus of pleasure as she glazed to surrender to him.
"What the hell!"
He planted his mouth on hers and drove his tongue inside to suck off a ripe French kiss, reveling in the use of her wet, helpless mouth.
"Mmmmm," she went and exploded under him. Her body arched up. She writhed and her breath blasted on his cheek. He felt all of her animal female bitch heat as she burst. Wild cunt throbs squeezed on his prick. She tore her mouth loose to get air.
"Oh, Oh, Ahhhh, eeeee!" she keened, giving up her girlhood to him. Her quakes along his thrilled cock were fabulous. Her gasps and her body distress-in-pleasure triggered him.
"Oh, you sweet sister bitch!" he gasped.
He felt an ineffable freeze. He locked deep in her cunt, held her hips and yawped helplessly.
"Shooooting offff!"
Spurt, spurt, spurt. He laid hot bursts of jism, right against her womb, completing the incest, crazed out of his mind to think of the degenerate thing they'd done – yet it felt soooo good. He spent off excited gush after gush, seeding her while she surged up and quaked in response to the flood of brother jism, both pleasure-locked in the taking.
"Ahhhhh."
"Oh, sooo hot!"
Finally they expired panting, his cock still stiff and completely buried in her belly, his seed burning and washing inside of her tight cunt. She had her eyes closed. He had his mouth against the soft skin of her shoulder licking, glowing from the sweet after-effects of the short, hot run.