Cindy-Loo hopped onto the couch beside her mother's boyfriend Bill, who was peering through his glasses at a well thumbed paperback.
"What yah, reading?" She bounced up and down on the cushion, proudly sticking out her chest - she had really bloomed since her eighteenth birthday and loved to show off her nicely large breasts to her mother's handsome older boyfriend.
Bill frowned and kept his eyes on his book. She was in one of those super-light little summer dresses that clung to her body way too much. For sure she wasn't wearing a bra.
"Book," he grunted, really trying to ignore her. Her mother, Melody, was out for drinks with her friends and she had made him promise to not encourage the girl.
"I wanna read too!" she declared and wiggled her way across his lap, bumping his book out of the way with her big round bottom to get to the stack of magazines on the side table.
"Fuck!" he grunted, as she shifted and ground herself on his crotch, flipping open a magazine and sticking her tongue out the corner of her mouth as she made a point of slowly flipping through the pages. "Cindy-Loo!"
She giggled, gyrating her hips, her dress slowly riding up.
"What?" she said in a drawling little girl voice. "Ooooh, look at him!" She held up a picture of an older movie star with graying temples, just like Bill's. "He makes my pussy soooo wet!"
Bill smacked Cindy-Loo's bottom.
Her big blue eyes widened and a smile spread across her face. Oh shit, thought Bill.
The underside of her bottom was exposed - she was wearing panties - tiny little ones that had ridden all the way up her ass cheeks. Fuck- Fuck!
"It's true!" She continued, arching her back and spreading her legs. "Go ahead, feel it! My pussy is sooooo wet, Uncle Bill..."
"Cindy-Loo!!" he groaned, lifting his hand up, wanting so badly to spank her again, to discipline her so fucking hard! But that was the problem, wasn't it? She was his girlfriend's daughter!
"I'm almost as wet as you are hard, Uncle Bill," she said, staring at him, her pink tongue teasing her pouty lips. Slowly she rubbed herself over his crotch - ahhhh fuck, teasing his rising boner!
"Cindy!"
SMACK!
And as he did it, he felt his cock twitch under her lithe, little body. But he also felt the cold hard hand of his girl-friend grip his heart. God-dammit!
"Ooooh, that's it, Uncle Bill, you punish me real good! I know you love spanking!" Cindy-Loo giggled, grinding harder and faster. "You love spanking in the shower. Stroking your big-big dick!"
Bill jerked Cindy-Loo up to face him. The girl straddled the red faced man, her dress now hiked up around her hips. Her tiny pink panties were a triangle over her sex, the rest riding up her ample buttocks as she playfully bounced on Bill's straining bulge.
"You've been peeking," Bill growled, his eyes devoured her. The girl's breasts were jiggling quite freely under her dress.
"Uh-huh," said Cindy-Lou, putting her small hands behind his neck and slowly pulling his face down to hers. "And..." she said in a husky whisper. "I been listening to you beg Mommy for sex at night. How horny you are. How you NEED it soooo bad. She calls you 'a pervert' and 'gross'. All you get is a hand job while she checks her Facebook."
Bill's face was beet red. His hands had come to a rest on her ass, red with his hand prints. He found himself slowly squeezing that ripe round little booty.
"That's- That's private," he said in a whisper.
"It's okay, Bill," said Cindy-Loo. She brought her face closer to his, her full lips almost brushing his. "I get it. I get being soooo horny all the time." Her hips rubbed and rubbed against him, feeling his bulge just straining in his pants.
"You're Melody's... Your mother's... daughter," he groaned. His hands slowly stroked her bottom, loving how she was working him. The feel of her full young breasts. Those hard nipples rubbing against him through her dress...
"I'm 19 now," she said. "I'm an adult. It's not wrong." She slowly opened her mouth and enveloped his lower lip, sucking on it, softly biting. "Unless you want it to be wrong, Uncle Billy."
He softly smacked her bottom, gasping. "Oh fuck. Oh fuck, Cindy-Loo. I want it...I want it!"
Cindy let out a happy mew and slithered off Bill's lap to between his legs. She quickly yanked open his pants and slipped her hand in.