Arthur

Jill cracked open her door and peeked out just in time to see a man-sized figure walking down the hall. She smiled. Arthur would be easier to manipulate than Annie. After all, he was a man.

She reached for a robe that her sister had offered her but pulled back. Why on earth would she want to put on a robe, she thought.

So she stepped out into the hallway naked and headed in the direction she thought she saw Arthur. She'd play it cool, she decided, not attempting to seduce him immediately, but just exposing herself to him as if it were no big deal.

When she arrived at the kitchen, he was hunched over the sink, getting a glass of water. Jill didn't say a word, just waited for him to turn around. He was clad in his own robe and probably a pair of pajama pants. His face was unshaven and his beard had speckles of gray in it and his belly a slight paunch. He wasn't unattractive, but what Annie saw in a man so many years older, Jill never really understood.

He froze when he turned and beheld Jill's naked body. He'd seen her in a bathing suit before, but this was a different Jill. Her body was far more fit from the pole dancing and constant fucking, not to mention the tattoos, piercings, and bald, glistening twat.

It was impossible for his eyes not to dance over her features. 'He's a man' Jill thought smiling. At first Jill thought he was going to freak out and it looked it, as he started to take off his robe, probably to offer her. But he quickly stopped, seeming confused and awkward. 'He must like what he sees.' Jill thought again.

"Hi Art..." Jill said, "Can't sleep either?"

"Jill... you... you, um..." Arthur did his best not to stare at her nude body. His best wasn't very good. "You should really cover up, I guess."

But Jill knew he didn't mean it. "Are you embarrassed by the human body Art?"

"Of course not" Arthur said, swallowing a nervous gulp.

Jill looked down at her body. The night was a bit cold, and she felt it on her hard nipples and the dabs of moistness that sat on her pussy. "Do I look like my sister?"

"Um... maybe. I don't really..." The intellectual was completely befuddled and Jill was proud.

"How so maybe?" Jill kept it playful, pretending to be honestly curious, waiting for the right moment to strike.

"Well..." Arthur let out a deep breath. "I guess your nipples look alike... I mean... her's aren't pierced. But the same size... I guess."

Jill smiled and took a step toward her brother-in-law. "That's good. Size is important." Arthur tried to take a step back but the kitchen sink got in his way. "I wonder what else we have in common."

"Jill..." Arthur's chest was heaving heavily now. Jill could see his erection growing in his pajama pants.

"When my sister goes down on you, does she moan?"

"Jilly..."

"Because I moan..." Jill put a hand on Arthur's chest.

"I can't...." Arthur started, but Jill quickly put her finger onto his lips, quieting him and gently dropped to her knees. "No, you don't understand..." Arthur continued to protest. "I can't have another mistress."

"Oh Art honey, I don't want to be your mistress. I just want to taste your cock." And Jill knew she had him as she slowly peeled down his pajama pants and his middle-aged cock flung up at her face. She didn't want to be his mistress, but she did want to have total control over him. Manipulating him would mean all kinds of possible ways to punish her sister.

As Jill slid his rock-hard cock between her lips she let out a playful. "Mmmmmm... yesssss." having promised she'd be moaning. She thought of all the times in the past six months she'd done this, sucked a man's cock. It had been so impossibly many, she had to remind herself that this time was special. Even though her brother-in-law's cock tasted like any other cock, and he immediately put his hand on the back of her head, like so many other men had.

She moaned and slurped and slurped and moaned, swirling her tongue around every inch of his cock, making sure her saliva built up so when she pulled off it, strands of spittle dripped to the floor. Then she was back on it again, bobbing more and more downward until her lips nearly touched his black and gray pubic hair. He moaned quietly, probably filled with joy and anxiety, Jill thought. Jill moaned just loud enough so he could hear.

What if Annie awoke? Jill wondered. What would happen? Would she freak out? Scream? Cry? Would she watch curiously? Would she listen if Jill invited her to kneel down next to her and learn her technique? Would she open her lips willingly so Jill could share her husbands cum with her, passing it messily from one mouth to another?

Jill wondered if Arthur was wondering the same thing. And then, as she felt the man's cock tense and prepare to explode, something he'd said suddenly clicked in her brain. "I can't have another mistress." Is what he'd said. He's already sleeping around. 'What a jerk.' Jill thought. 'He deserves a real punishment.'

And then Arthur came, jizz filling up Jill's mouth fully. She relented off his cock and looked up at her brother-in-law with big, angry, lustful eyes. He didn't deserve a swallow. So she parted her lips and let his cum slowly run out, dripping down her chin and landing in several splotches on her breasts.

Arthur's breath was shaking, his mouth trembled. Jill assumed it had been a while since he'd had a blow-job that good, even with his mystery mistress. He slowly slipped his still throbbing cock back into his pants.

Jill grinned, knowing that Arthur probably thought this fling was ending. But she knew it was just beginning.