Unfortunately, it didn't work out that way. Her parents demanded Bridget's return only a few days later. They'd been far more lenient with her than they'd ever been with Donna, but, as they reminded her, over the phone, Bridget was still living on their money.
Instead they agreed to let their son Bobby visit Donna for awhile, as if substituting one for another. To Donna this was more than ample compensation. She'd always loved her adorable brother. At times she'd felt like a second mother to him as she'd watched him growing up.
And now perhaps she could be like a lover to him, too. As soon as he'd walked in the door with a big grin and his suitcases in his hands, Donna had felt a strong sexual attraction.
He'd grown taller and leaner since she'd last seen him, and a new growth of athletic, musculature had given him an appealing physique. Donna found herself considering forbidden desires during the first several days of his visit.
He had turned into a very handsome young man, with soft, curly brown hair and the male version of her family's good looks. Most importantly, the bulge in the crotch of his pants was quite large and promising. Several times Donna caught herself hungrily studying the outline of her young brother's dick.
Roy noticed her looking at Bobby too.
"You keep your God damn hands off of him," he warned her the first night of Bobby's stay. "I mean it, Donna. I don't care how weird this family gets, you're not giving your pussy to any blood relative."
"Oh, for God's sake," Donna had protested. "Fucking my own brother! What kind of a girl do you think I am?"
"I know what kind," Roy had replied gruffly. "Don't play innocent with me. If I catch your mitts on that prick of his I'm going to tan your ass so bad you'll wish you'd been born an orphan."
Donna had muttered an obscenity or two and refused to continue the conversation. But she'd known that there was truth in Roy's accusations, and she decided to suppress her desires. Incest with her brother would be sinful. She had no intention of stooping to such depths to gratify her needs.
But that was before she caught her brother jerking off.
It happened only five days after his arrival, on a sunny, windy weekday afternoon. Donna was vacuuming the living room when she decided impulsively that the rest of her chores could wait for the next day. She was getting tired of housework, and it had been awhile since Bobby and she had enjoyed a good brother and sister talk.
He was upstairs in the guest bedroom reading, she thought. Donna put away the vacuum cleaner and, walked to his room without changing her clothes. All she had on were a pair of slippers and a skimpy house robe that barely covered her pussy. She knew Bobby would be able to see her big, braless tits jiggling under the robe, and more of her naked thighs than some might consider proper, but that didn't matter. Why be shy around her brother?
Bobby's bedroom door was ajar. Donna walked to it happily, smiling as she prepared to ask him if he wouldn't mind socializing with her for the rest of the afternoon. Then she looked through the door and saw what he was doing, and the smile faded from her lips.
Bobby was on his back on the bed, stark naked. Donna had known he had a good figure, but she'd never guessed his muscles would be so tan and hard, or that he would have such a hairy chest.
His dick was standing straight out of his short, curly hairs, as hard as a rock. Donna whimpered almost inaudibly as the heat of lust stabbed suddenly deep inside her cunt. Her little brother had a gigantic hard-on, longer and thicker than Ted's or even Carry's. It was the biggest cock she'd ever seen.
"Ungghhh," Bobby groaned. His cheeks were red, and his expression was contorted obscenely with desire. As Donna watched, his hand raced smoothly up and down his enormous, blood-clogged dick. Rhythmically he massaged its burning stiffness, jacking himself off.
Pre-cum oozed from his swollen, purplish cockhead. His lean thighs quivered, and the bed shook beneath him as he humped his hand. Donna pressed close to the crack in the door and kept watching. She knew it was wrong to be there, that it was sinful to take pleasure in the sight of her brother's cock.
But she'd lost all control over herself. Her nipples tingled with their stiffness, rising to protrude through the sheer fabric of her robe. Donna's hairy pussy grew wetter and hotter every time Bobby stroked his massive cock.
"Unnggghh!" Bobby moaned loudly as he beat off, obviously unmindful of the fact that his sister was with him in the house. "Oh fuck it… so good… umm."
His stroking movements quickened. He arched his back as his over-endowed cock grew even larger in his hand. Abruptly Donna realized that he was about to come, that his creamy load would be wasted as it gushed on his chest and belly.
She couldn't let that happen. The next thing she knew she'd pushed open the door and was standing before her brother's bed, literally panting with lust as she aired hungrily at his twitching, throbbing cock.
"Donna!" Bobby whipped his hand from his pulsing dick and stared at her in shock. "What the fuck are you doing in here?"
Donna moved closer, never taking her eyes from his upthrust prick. It was at least ten inches long and as thick around as a ripe cucumber. What a hunk of meat, she thought, whimpering as her pussy throbbed painfully between her thighs. Never before had she felt so unbearably, irresistibly horny.
"So you were jacking off, were you?" she whispered. "Couldn't hold it back, could you? That's what it's like being a hung teenage stud. Your dick stays stiff all the time!"
Bobby's mouth gaped open in astonishment at her language. Donna sat next to him on the bed, licking her lips as he studied his drooling, pulsing cock. Uncontrollably she slid her hand up his thigh and wrapped her fist around the center of his hard dick.
It felt stiff and thick and warm, better than any cock she'd ever touched. Donna brought her other hand up to his prick. His rod was so long that the knob and several inches rose out of the twin grip of her fists.
"Donna, you better stop that," Bobby moaned fearfully. "We're gonna get in trouble."
"So you like getting your cock stroked," Donna moaned hoarsely. She began to move her hands up and down on his enormous dick, sighing as more jism oozed from his gaping cum slit. "Oh yes, I'll bet that feels so good to you. Your sister's soft hands, keeping your cock so long and hard."
Impulsively, Donna dropped her head to the shiny-skinned crown of his organ. She extended her tongue and licked quick circles around the tip of his cock, groaning with satisfaction as she felt the meaty shaft throb eagerly on her palms.
"Unggghhh!" Bobby's eyes lidded drowsily as he gave in to the new pleasure growing in his prick. "Oh fuck, Donna. That feels so… nice… mmmmm."
"Would you like me to suck it for you, Bobby?" Donna purred. Her cunt ached as she licked the underside of his spongy knob, darting her tongue onto his cum slit. "That's one thing you can't do for yourself, isn't it? Unless you've been giving yourself blow jobs."
Bobby winced and nodded his head hornily. Shamelessly Donna rubbed his throbbing cock all over her face, letting the seeping cream lubricate her chin and cheeks. Then she opened her mouth, as wide as she could and took the knob of his cock deep into her mouth.
His prick was even thicker than she'd expected, so enormous that she could barely stretch her lips wide enough to accommodate the shaft. Donna knew how obscene she had to look with her mouth stuffed with her brother's cock, but she hardly cared. All she wanted to do was taste and suck the burning hardness of his prick, to greedily gulp his jism when he came.
Forcing her lips wider apart, she took nearly a third of his swollen meat down her throat. Then she started sucking him off, compressing and puckering her cheeks as she rolled her tongue in circles around the crown of his prick.
"Ungghh! Oh fuck it, sis!" Bobby started to hump his ass, thrusting his gigantic tool down her throat. "That does feel good! Oh fuck, suck my cock harder!"
Donna sucked feverishly, slurping and gulping noisily as she lapped up the sweet pre-cum continually oozing from the tip of his cock.
Her lips started to hurt from being spread so far apart, and her cheeks reddened painfully with the intensity of the blow job. But Donna noticed nothing except her own lust.
Her hands moved all over his body, squeezing his thighs and chest and arms. Finally she wrapped her right hand around the center of his turgid prick and started to jack him off again, rhythmically tugging the loose flesh of his cock up and down.
"I'm gonna come, sis," Bobby groaned warningly. She felt his huge prick swelling larger and stiffer by the moment as it bathed in the buttery wetness of her mouth. "Oh please, keep sucking it for me; I can feel it now gonna come so hard!"
Donna knew his balls were aching painfully. They were as over-sized as his dick, two orange-sized globes at the base of his cock encased by a hairy, wrinkled sac. Jacking him off furiously with her right hand, she fondled and warmed his nuts with her left.
"Coming, Donna!" Bobby groaned. "Unhhhhh…"
The cum pumped explosively from the bloated knob of his dick, shooting in a creamy gusher down Donna's throat. Donna tasted his salty jism as it spurted onto her tongue and whimpered happily. Just as her brother had been endowed with the biggest cock, his cum was the most delicious she'd ever sucked.
Again she gripped his squirting shaft in both hands. So she could jack him off as hard as she could and get out all of his burning cum. Donna sucked and jacked him off until her wrists ached.
Finally the total, throbbing stiffness of a coming prick went rubbery in her hands. By that time Donna had gulped down what felt like pints of cum. But she still hadn't been able to swallow it all. As she smiled at her young brother, creamy jism dripped from her face onto his legs.
"That was beautiful, Bobby. You've got the biggest dick I ever sucked. But can you keep it stiff for me now? I can't wait to feel such a big cock going up my cunt."
"Take off your bathrobe," Bobby asked anxiously. "I want to see you naked."
Donna looked at him curiously for a moment. Then she smiled knowingly and rose from the bed. Of course the sight of her body would turn him on, more than anything she could with her mouth.
The chances were he'd spent most of his childhood looking furtively for glimpses of her body when she was getting ready for bed, or climbing out of the shower. Sometimes Donna forgot how stacked she was, and how much a really voluptuous, big-titted woman could turn a man on.
"Okay, Bobby," she whispered. She kicked off her slippers and slowly let the robe fall from her bare shoulders to the floor. "Anything you want from me is yours."
Bobby gasped as his big sister suddenly revealed every inch of her dazzling nakedness. "Jesus, sis, your jugs are so huge," he sighed. "I always knew you really had big knockers, but… wow!"
His eyes moved from her large, firm tits to her slender waist and long, perfectly formed legs, until his gaze finally centered on the hairy, brown triangle of her cunt. Donna's pussy grew even wetter. His huge dick was getting stiff again before her eyes, swelling with blood as he studied the small, curly-haired slit that would open up for the invasion of his swollen cock.
"Don't you want to fuck me now, Bobby?" Donna climbed back onto the bed and knelt beside his supine body, shamelessly letting her stiff-nippled tits sway and jiggle over his chest. "I'll bet that'll feel better than a blow job. If you think my mouth was wet, wait'll you get your dick inside my cunt."
"Sit on it," Bobby croaked. He held his ten inch cock in his fist straight up, ready to tarn it in his big sister's pussy. "You'll have to, you know, show me some stuff. I never fucked a girl before."
"Oh, Bobby!"
Donna was delighted to hear that her brother was a virgin. It made her feel that much more tender towards him, and she'd always wanted to take a boy's cherry. Particularly one with such an enormous cock.
Climbing on top of him, she thrust her knees into the mattress to either side of his hips, so that her hairy, dripping pussy hovered over the purplish crown of his hard-on. Bobby withdrew his hand from his prick. Dropping her arm between her spread-eagled legs, Donna groaned as she held his cock upright and felt its meaty thickness pulse on her palm.
Slowly she lowered her ass, until the spongy knob pressed onto the dampened lips of her fuck slit. Donna undulated her hips to rub his dick all over her cunt opening, giving her pouting pussy lips a chance to loosen for the enormous cock that would soon be stabbing deep inside her belly.
"Go ahead, Donna!" Bobby grabbed her hips and looked anxiously at her cunt. "I want to feel it now. Put it in your pussy."
Grunting, Donna centered his cockhead between her cuntlips. Then she pushed down hard, and for a moment thought she'd pass out as the first inches of his rock-hard dick bored into the clasping, clinging tunnel of her fuck hole.
It was so big and thick, like she was fucking herself with the largest dildo in the world. With only a few inches of his cock buried in her hairy snatch, Donna had to stop so her pussy would stop throbbing. Every muscle in her cunt could be felt sucking and gripping around his cock.
Then Bobby started humping his ass, too eager to wait, trying to thrust more of his dick into her pussy. Donna took a deep breath and contracted her asscheeks. Then it was going all the way into her cunt, inch after inch of his hard-on stabbing into the stretching sheath of her pussy.
Fucking me now, Donna thought hornily. Oh, it is big! It's the biggest dick I've ever fucked! I don't know if I can take all of his meat. I've got to… my pussy's so wet! Oh God yes, going into me now… fuck me, Bobby… fuck my cunt with your big, hard cock!
She pushed down hard with a last convulsive bucking of her jiggling asscheeks, grunting as she took all ten inches of his meat into her pussy. For a long time then she sat motionless astride his hips, groaning and moaning as his dick throbbed and twitched deep inside her buttery cunt.
Bobby humped hornily beneath her, trying to ram his cock in and out. Donna stared down between her big tits and looked at her pussy, at the curly-haired pink lips stretching to suck around his cock. Slowly she lifted her ass and shuddered in ecstasy as his dick slid out of her cunt.
His dick was coated with her fuck juices now, and her cunt was open and wet. Donna started fucking her young brother, slowly at first, then quickening her rhythm as her aching pussy fed on the satisfying stiffness of his magnificent prick.
"It feels good," Bobby sighed. His lips curled in a smile of pleasure as his big sister's pussy clung tightly to his dick. Again he squeezed her hips and rocked his ass, thrusting his cock up to meet her strokes.
"That's right, Bobby!" Donna squealed excitedly. She fucked him faster. Her asscheeks jiggled as the mattress creaked beneath them. "You're doing it now! Oh yes, you're a natural born fucker! Do it hard, lover, that's what a girl likes! Slain your fucking dick in your sister's horny cunt!"
Bobby stared in fascination at her enormous, swaying tits. Instinctively he reached up and kneaded her tits with both hands, pinching the stiff, rubbery nipples with his forefingers and thumbs.
"That's good, Bobby, you're making me so hot!" Gasping, Donna bent her shoulders so that her jiggling knockers would graze his lips. "Suck them for me now! Oh, I'd love that! Suck my titties good while you fuck my cunt!"
His mouth opened, dosing tightly around the silver-dollar sized cap of her right tit. Bobby sucked her delicious nipple as hungrily as a suckling child. Wrapping his hands around her asscheeks, he fucked her much harder, punching his ass off the bed.
"I'm gonna come, Bobby!" Donna squealed. Her cunt was so wet that she could hear the squishing fuck juices as her pouting cunt slit clasped around his pistoning dick.
"Oh God, Bobby, I know I'm getting close! My cunt's starting to burn! Awwwunngghh! I can't believe what a huge cock you have! Fuck me with it now, harder, harder, as hard as you can!"
Sweating and panting, she pumped her pussy on his cock in a driven frenzy of incestuous lust. Bobby sighed and clawed her asscheeks, puckering and bellowing his cheeks as he sucked her tit.
Then they were both fucking as fast and as hard as two horny dogs, as if intent upon driving the mattress into the floor. Their bellies heaved and slapped sweatily together. Their grunting and moaning filled the whole house.
Suddenly Donna felt her cunt churning, and she knew she was coming. Shrieking, she pumped her ass down and took as much of her young brother's dick as possible into her throbbing cunt.
"Coming Bobby! Ungghhh! Oh fuck it, oh you fucker!"
The spasms poured violently through her pussy, forcing her cunt to clamp around Bobby's dick, literally sucking the jism out of his balls. Bobby cried out as the incredible tingling stiffness of coming flowed through his enormous, twitching cock.
The second load of cum gushed through his prick and squirted out of the swollen, purplish knob, as profuse as the first load he'd dropped in her mouth. Bobby winced and shook his head helplessly on the sweat-stained pillow. Spurt after spurt of jism flooded from his throbbing cock, until his balls had no more cum to give to his sister.
Donna cried like a baby as she felt the gushers of jism shooting into her pussy, deluging her cunt with cream. There was no denying the ecstasy and satisfaction she felt. She'd fucked her younger brother, the one thing Roy had told her never to do, and already she couldn't wait to give him her pussy again.