"Get down," Sam said, his hands on Marcy's shoulders, pushing her toward the floor. "Get down on your knees and suck me."
Marcy kissed her brother's chin and sank to her knees in his bedroom. When she looked at the cock for the first time she almost lost her breath.
Sam's prick was one of the biggest the teenager had ever seen in her life. It jutted out from his body like a fleshy flag pole, tall and proud and defiant.
She gripped the cock in both hands, wrapping one fist over the other, gripping the gargantuan prick like a baseball bat. Her eyes drank in the massive size of the cock. Sam's pricktip was definitely the largest she'd ever seen in her life.
"Suck me, Marcy," Sam whispered, smoothing an errant strand of blonde hair away from his sister's eye as she kneeled before him, holding his cock in her hands. "Kiss my cock and show me how much you love sucking cock. Show me that you can make Papa happy."
Again Marcy didn't want to believe what she was doing, but there was no denying it. She worked her hands, over the cock, stroking it from the rim to the pricktip down to the very base of the shaft, then up toward the cockhead once again. As she stroked firmly on her brother's colossal prick, her big tits shook and jiggled from her chest, the pink nipples hard and tingling with excitement.
"You're huge," Marcy whispered, then planted a soft kiss on her brother's pisshole.
She kissed the cockhead several times as she worked her hands over the cockshaft. The throbbing prick was so thick that she couldn't touch her fingertips to her thumb with the cock in her fists.
Finally, after what seemed like an eternity, Marcy allowed her tongue to slither out from between her lips and touch his cocktip.
"Mmmmmmm!" she moaned as her tongue played lightly along the clefted underside of her brother's cockhead.
Sam pushed his hips, forward and his cockhead brushed past Marcy's lips, rubbing against her cheek. She moaned, still refusing to allow him to fuck his prick into her mouth. The taste of his cock made pussyjuice flow more freely to the itching, hungry pink lips of her cunt.
"Suck me, damn you!" Sam hissed. "Don't just play with the fucker!"
But Marcy refused to be hurried. This moment was too special for her to be hurried.
She licked around the cockhead, salivating as though she was anticipating a delicious meal. Not until the entire flexing, throbbing head of her brother's cock was glistening with her spit did she finally begin to take the pricktip into the hot, moist recesses of her mouth.
"Mmmmmmmm!" Marcy purred soulfully, bobbing her head and shoulders, taking the cock into her mouth just a little bit at a time.
She flicked her tongue against Sam's pisshole and caught the tangy, salty flavor of pre-cum. Pushing her beautiful face even further forward, Marcy's pink, nibbling lips slipped over the rim of the cockhead.
She had never tasted a cock quite like her brother's. Even though Marcy knew in that tiny part of her brain that was still capable of thinking rationally that her brother's cock really tasted no different than any other cock that had passed between her lips, she suspected that somehow his tasted better, more masculine, than any other man's cock. Better than any cock in the world.
She trembled, sitting on the backs of her heels as she brought her lips over the cockhead several times, then began working her way down the shaft. Marcy could only hold the pricktip and a couple inches of the shaft in the hot cavern of her mouth before the cockhead was pushing threateningly at the opening of her throat.
"So beautiful," Sam groaned softly. "You're so beautiful with my cock in your mouth."
The words spurred Marcy on. She stroked his prick with both hands, running her fists back and forth over the shaft as she twisted them in opposite directions, simultaneously jerking him off as she sucked him off.
Bobbing over the prick Marcy's big tits jiggled tautly from her, chest, her lust-hardened nipples a visual display of the wantonness of the eighteen-year-old's need for cock.
She chewed lightly with her lips on the shaft of her brother's massive prick. She could feel the cockhead pulsing hotly against her tonsils as she drew a warm, firm, wet suction on the jaw-stretching prick.
Marcy always loved to suck cock, but she had never enjoyed one quite as much as this. She stuffed her mouth with the prick until the cockhead was at the back of her throat. Tilting her head back, allowing her ovaled lips to stretch out as they surrounded the shaft of Sam's cock, she looked up into his face to make sure that it was really his pre-cum that was tingling on her taste buds.
Marcy shivered, squeezing her knees together to force her cuntlips to mash slickly against each other. Her cunt was seething with lust and though she would have loved to enjoy the sensation of taking Sam's monstrously long, thick cock into her cunt, she was too turned-on by giving him the blow-job to stop.
There'll be another time! she thought happily, flicking the tip of her tongue against Sam's pisshole to lick off the delicious nectar of his pre-cum. Another time I'll fuck him. For now I'll suck him until I get all the cum he's got in his balls!
Marcy wanted to give Sam the best blow-job he'd ever had in his life. She was certain that a handsome man like Sam, with a cock his size – she estimated it at ten inches long – had known many women who were more than willing to drop to their knees to suck him off, or spread their knees to fuck him.
Marcy slurped, pounding harder on the cock's shaft as she nodded her head over it, bringing her butter-soft lips back and forth over the ridge of Sam's sensitive cockhead.
The hot-blooded blonde used her tongue expertly on the underside of the pricktip, scraping her tongue down, the shaft as she sucked the head deep into her mouth. Her cheeks fluttered out as the fat cockhead's ridge rubbed against the inside of her caved-in cheeks.
"Suck it, Marcy," Sam whispered, his tone completely distorted by the lust he felt as he watched his sister's face pistoning over the end of his prick. "Oh, God! Lick my balls! Lick my balls and suck on them!"
Marcy responded instantly to her brother's request. She allowed the cockhead to slip out from between her lips with, an audible popping sound. Sliding a little closer to him, she rubbed his spiny, spermy cockhead over her lips, then opened her mouth wide and started chewing lightly on the heavily veined shaft of his cock, working her way tenderly toward his cum churning, hairy balls.
When she reached Sam's balls, she tucked them gingerly, one at a time, between her lips. Sucking on his balls, swirling her tongue around them as she basted them in the hot saliva of her mouth, she stroked his cockhead in her right hand.
"Goddamn it, Marcy! You're making me so hot!"
She sensed that Sam could not hold back much longer and the thought of having his cum shooting onto his carpeted floor sent a shiver down Marcy's spine. Such precious cum should never be wasted so needlessly.
Sucking the cockhead between her lips again, Marcy mentally prepared herself for what she knew was going to be her ultimate test of cocksucking ability. She placed her hands flat on Sam's body, holding his gargantuan prick in the crotch of her thumbs, and slowly began swallowing all ten inches of his incredible prick.
The pricktip flattened her tongue to the bottom of her mouth. Marcy continued sucking more of the prick into her face, tendrils of honey blonde hair tickling her concave cheeks as she sucked hungrily, passionately on the huge cock. "Can you deep-throat?"
With the cockhead at the back of her mouth, Marcy nodded her head.
She felt the cockhead pushing hard against the back of her mouth. Marcy squeezed her eyes shut, fighting against the throbbing sensation in her throat, pushing her face harder over the cock.
When the pricktip slipped past her tonsils, Marcy's neck swelled out visibly with the thickness of her brother's incredible prick. She mewled softly, opening her jaws as wide as possible, chewing down the shaft of the cock as the fleshy pricktip drove deeper and deeper down her throat.