When morning finally arrived, it wasn't the light streaming in through Christina's window that woke her, but rather the lewd moans and wet slapping of flesh emanating from her parents' bedroom. It took a moment for her brain to make sense of what she was hearing, but once it did, a big, excited smile spread across her face.
Like a bolt of lightning, she scrambled out of bed and over to her dresser. After rubbing the sleep from her eyes and making a token effort at bringing her frizzy, red hair into some semblance of order, she crept out into the hallway. She'd spent practically all of the previous evening waiting and hoping for a chance to join her parents in bed, and she could barely contain her excitement that the moment had finally arrived.
The sight that greeted her when she poked her head inside their room was far from disappointing. Diane's arms were stretched out on either side of her body, holding onto the sheets for dear life. Her legs were splayed wide and bent at the knee, so the soles of her feet pointed toward the ceiling. The rest of her was pinned beneath her husband's body in complete submission to his insistent fucking. Her ass and thighs jiggled with the repeated, forceful impact of Ray's body slamming into her own.
Christina felt a flush of warmth between her legs as she watched her parents rut like a pair of animals in heat. She marveled at the sight of her Dad's naked body--the muscles of his ass clenching every time he thrust his hips forward, driving himself deep into her mom's wet cunt. Diane let out a throaty groan every time he bottomed out inside of her, and Christina couldn't help but wish that they could trade places so that she could be the one writhing and squirming beneath her dad's insistent body as he reamed out her hungry cunt.
Almost without thinking, she found herself reaching beneath the waistband of her panties and running her fingers through her matted pubic hair and down to her clit, which was erect and begging for stimulation. She ran her index and middle finger in slow circles around her sensitive nubbin as she watched the base of her dad's hard cock repeatedly disappear between the perfectly round cheeks of her mom's ass.
"I think we have an audience, honey," Ray said as he brought his churning hips to a temporary halt.
The sound of her father's voice nearly made Christina jump out of her skin. She'd been so entranced by the sights and sounds of their lovemaking that she'd failed to notice that she was being observed as well.
"Mmmm... took you long enough," Diane said, turning her her head to face her daughter. "I thought you'd never wake up."
"Not much chance of that with all the noise you two were making," Christina replied as a relieved smile spread across her face. Her eyes darted back in her father's direction, only to realize that his own gaze was focused between her legs.
It was only then that she realized that her hand was still shoved inside of her panties and cupping her excited sex. She withdrew it quickly, her cheeks reddening in embarrassment. Even after everything that had already happened, there was something about the look in her father's eyes that made her feel strangely shy and vulnerable.
"Sorry, I didn't mean to stare," he said, blushing right along with his daughter.
"It's fine -- I don't mind," Christina replied, hoping she sounded more confident than she felt. There was a moment of awkward silence before she finally said, "Don't stop on my account."
Diane grinned. "You heard her, honey -- get busy!" she said, reaching behind herself to playfully slap him on the thigh.
Ray's blush deepened, but he did as he was told. Moments later, he was hard at work, driving his prick into the warm crevice between his wife's legs. Every now and then, he would dart his eyes back at Christina -- his mind trapped somewhere between his wife's soft, pleasurable body, and the utter strangeness of sharing their raw sexuality with their daughter.
"Oh yeah! That's it!" Diane groaned, egging him on. "Show our daughter what you can do with that perfect cock of yours!"
As the room was once more filled with the sounds and smells of sex, Christina found it impossible to resist the temptation to move her fingers back down to her dripping cunt. A contented sigh escaped her lips as she swirled her fingertips through her moist opening before settling them back on her engorged clit.
It quickly became apparent that she was locked in a sort of feedback loop with her parents. As Ray watched his daughter masturbate, the pace and intensity of his fucking started to pick up speed. Likewise, Christina did her best to match his pace, imagining that it was his cock, and not her fingers that were digging repeatedly into her pussy.
"Oh fuck, Oh fuck, OH FUCK!" Diane moaned. "Keep fucking me! Don't stop! Don't ever stop!" she demanded as the wet sounds of their slapping flesh reached a crescendo pitch. Finally, her face locked into a rictus of pleasure and her eyelids fluttered.
Christina knew her mom was about to cum, and she felt a giddy sense of excitement as she watched her bury her face in the sheets and let out a piercing shriek. Her legs shot out straight, and the muscles of her ass and thighs rippled with a series of violent contractions. Lifting her head, she took in a deep lungful of air and used what little leverage she had to writhe and squirm beneath her husband's body. Anyone who had just walked in would think she was trying to escape, but nothing could have been farther from the truth.
As Diane rode the waves of orgasmic bliss, Ray kept ramrodding his cock in and out of her, driving her to ever greater heights of pleasure. Christina felt a fresh gush of moisture pool at the entrance to her cunt as she watched him use her mom like his own personal fuck toy. Even when Diane's wild contractions had ceased, he just kept fucking her, harder and harder, until he couldn't hold back back any longer.
Ray's orgasm was more restrained than Diane's. A few, quiet grunts escaped his lips as he buried himself to the hilt and emptied the contents of his balls into her. His hips gave a few more gentle thrusts before he collapsed fully on top of Diane's panting body.
"Enjoy the show?" Diane asked as she smiled lazily up at her daughter who was still busily frigging her cunt.
The only reply Christina could muster was a strangled cry as a small, but powerful orgasm ripped its way through her body. No longer able to support her own weight, she fell to her knees and buried her index and middle fingers deep into her clutching hole. Watching her parents make love was one of the most exciting things she'd ever seen, and she kept mentally replaying those images over and over in her mind as waves of intense pleasure washed through her body.
Diane chuckled and said, "I guess I'll take that as a yes."
Christina let out a low groan. "That was... so... so fucking hot..." she mumbled as she struggled to come back to her senses.