While Gail continued to suck her brother's big prick, her free hand moved to his balls. The hairy balls squirmed in her grasp and she groaned along with her brother.
"God, Sis, I'm gonna dump my whole load down your throat any second now!" Biff growled. He could feel his heavy load of cum churning in his ball-sac and he threw his head back, trying desperately to hang onto the little self-control he had left.
The young girl's dog still lay between her widely splayed legs. His tongue played over the part of her naked cunt which it could reach. The animal was letting out a series of little whimpers from deep in his throat. More and more of his mistress' cunt juice ran into his mouth and the thirsty dog drank it down gratefully, savoring the tangy taste of the thick sauce.
Gail felt her little pussy throbbing madly against her dog's tongue. The thrilling sensation made her deep-throat her brother's cock even more hungrily.
Biff groaned and fucked into his sister's mouth like a man gone mad. His hairy crotch battered up against her upturned face, which was now soaked with sweat. His cum-bloated balls bounced lewdly against her chin.
"Aaarghhhh," Gail whimpered, feeling Scotty's dog-tongue rubbing even more roughly over her sensitive cunt flesh.
Gail began to sob with a deep, primitive pleasure. She felt her dog's slippery tongue sliding up into her fuck-hole. She closed her pussy muscles around the invading tongue, and the dog whined with arousal.
God, yes, Scotty, Gail thought, still sobbing. Fuck me, Scotty! Fuck me with that horny tongue of yours!
But her mouth was still stuffed with her brother's cockmeat and she could not speak. She could only sob and groan out her lust. Biff continued to fuck her throat deeply, and she could feel his throbbing prick pushing demandingly against her inner cheeks, puffing them out obscenely.
The young teenager felt completely wanton, like a bitch in heat as she squirmed uncontrollably on the floor. She pushed her cunt up against her dog's furry face, silently urging him to eat her pussy harder and harder. At the same time, she continued to work her mouth and throat muscles around Biff's prick, giving him the most exciting blow-job of his life.
Scotty whimpered and fucked his tongue in and out of his mistress' pussy hole. He relished the taste of the juices flooding her tight little pussy. He moved his tongue to her clit, licking it just as hard as he could.
"Yuuuuuh!" Gail cried out as she came.
Jolts of animalistic pleasure shot through her body. She clamped her firm thighs tightly against the sides of the dog's head, holding him in place while her orgasm thundered through her.
"God, look at you!" Biff cried, staring down at his writhing sister. "That dog made you come, didn't he? You're coming! Jesus, Gail, keep sucking me! I'm gonna come, too!"
Gail wanted her brother to come. She longed to feel his thick cum pumping down her throat into her belly. She tightened her lips and throat muscles around his stiff prick and closed them tightly. She sucked just as hard as she could. She sucked so hard that her efforts made her feel dizzy. But still she did not stop. She continued to suck and suck, not stopping even long enough to breathe.
Meanwhile, Scotty nuzzled his face farther between his mistress' legs. He stabbed her orgasming clit with his tongue, feeling her coming. The thrilling sensation made his prick grow harder and the animal rubbed his aching hard-on against the rug.
Gail's little cunt was dripping wet now. It was soaked with cunt juice and dog-drool. She could hear Scotty's tongue sloshing through that swamp of wetness as he continued to lick her through her orgasm.
She felt as if she might faint, she was sucking Biff's cock so hard. While she sucked, she swallowed, tugging even more of the boy's stiff prick down her throat.
"God, when I come… gonna give you such a big load… like never before," Biff panted.
He continued to fuck his little sister's mouth with his prick. He could feel her clenching and unclenching her tight throat muscles around his bursting prick, hugging it with her throat. Her fingers played over his boiling balls, which were heavy with cum just begging to be released.
"Suck meee haaaard!" Biff yelled, overcome with fuck-lust.
"Argh!" Gail responded, thrilling to the feel of her dog's rough tongue scraping over her clit.
Each time her orgasm began to subside, Scotty seemed to sense it and he licked her clit all the harder. His hard licks caused Gail's orgasm to spiral upward again until the youngster felt as though she would never be able to stop coming.
Gail knew that her little pussy was feeding her dog its thick juices, just as Biff's cum slit was feeding the young girl teasing trickles of his load of cum. She couldn't get enough of her dog's tongue in her pussy, and the feel of her brother's prick stuffing her mouth to bursting thrilled her beyond belief.
The teenager writhed and twisted on the floor, unable to restrain her frenzied movements. She released her brother's balls and clawed roughly at her aching tits. She raked her stiffened nipples with her sharp fingernails, groaning with both pain and pleasure.
Over and over again, Scotty continued to fuck his hot, wet dog-tongue into his mistress' dripping pussy. His tongue felt like a cock to her lust-crazed senses, and the lewd sensation just intensified her orgasm.
Scotty felt his cock swelling to absolute stiffness as he drank down the girl's orgasmic juices.
At the same time, Biff continued to fuck his cock in and out of Gail's mouth. He moved one hand down to her chest, pushing her hand away from that well-squeezed tit. He grabbed hold of the jiggling tit, cupping it in his hand.
Gail gurgled, feeling her brother's hand squeezing her tit hard. It felt so much better to have her tit squeezed and rubbed by someone else. That was one thing her dog could never do for her, although the youngster had often wished that he could.
Biff moved his fingers to his sister's nipple. He pinched it just as hard as he could.
Gail groaned, savoring the little darts of pain which lanced her tit, mingling with the pleasure her brother's hand was giving her.
With his other hand, Biff pulled Gail's head upwards again and again. His movements forced her lips to slide all the way down the length of his trembling prick. He fucked her mouth relentlessly, moaning with unrestrained lust all the while.
Gail felt her orgasm beginning to fade, and she let out a little sigh of disappointment. But just then, Scotty's lapping dog-tongue thrust into her cunt again.
"Yuuuh!" Gail moaned, her eyelids fluttering closed.
She came again. While tremors of orgasmic ecstasy poured over her feverish body, she twisted and writhed there on the floor. She ate her brother's cock while her dog ate her pussy.
The Irish terrier whimpered lustfully as he swallowed another load of girl-cum. He could feel his mistress' intense orgasm shuddering through her cunt, and his own body shuddered in response.
Gail's orgasming pussy twitched and trembled against the animal's mouth, making him whine with excitement. As the young girl continued to come, she sucked her brother's prick even harder. She could feel its entire length throbbing strongly down her throat. She sensed that the boy's orgasm was building, and that his thick cum was about to spill out from his tightening balls, through his cock, and into her hungry mouth.
"Jeeesus, Sis, I'm about to pop! Keep sucking me hard like that, you lousy dog-fucking whore!" Biff shouted.
Her brother's crude words thrilled the young girl and she tightened her throat muscles as hard as she could around his stiff prickmeat. She could feel the big cock pulsating with more and more hot blood as the boy face-fucked her harder and harder.
She sucked in her cheeks to suck him still harder. Biff's cock bucked violently in the tight, wet confines of her mouth and her throat.
"Gonna come… gonna come… gonna come!" Biff chanted as he arched his back and threw his loins forward. He fucked his little sister's face wildly.
Scotty's cock was about to burst, too. The dog continued to scoot his haunches forward and back, making his hard-on drag with a delicious friction against the rough fabric of the carpet.
Gail gurgled as her brother began to shoot his load of cum into her mouth. She felt hot streams of thick jism jetting deeply into her mouth and down her clenching throat.
Scotty felt his mistress' pussy spasm again against his tongue and snout and he whined excitedly, licking her cunt all the harder.
Gail groaned around her brother's orgasming prick as she felt her pet licking her pussymeat harder than she had thought was possible. He was licking her so hard now that she was sure his rough tongue was bruising her hypersensitive cunt flesh. But she didn't care. In fact, all that the young girl did care about at that wild, depraved moment was the thrill of swallowing her own brother's cum while her little pussy continued to orgasm against her dog's tongue.
Gail came again and again as she felt Biff's cum-load filling up her belly. She gulped it down eagerly, not wanting to waste one single precious drop of the delicious-tasting juice. Her lips fastened tightly like a rubber band around the boy's violently pumping, cum-shooting prick.
Biff threw his head back and clenched his teeth tightly together. He let out a cry like a wild mating animal, and his eyes rolled. He could hear the sounds of Scotty's tongue sloshing through Gail's pussy juices and the sound gave him even more pleasure. He could feel the veins of his neck standing out, bulging, and for a moment or two he worried that he might actually have a stroke from the sheer force of his orgasm.
The dog felt his mistress' cunt muscles closing around his tongue again and again and he felt his prick jerking against the carpet, about to come.
Gail continued to drink her brother's cum. Her cheeks hollowed and filled as she tried to keep up with the thickly jetting streams of creamy jizz.
She howled deep in her throat with excitement, and she was delighted when she heard Scotty growling back at her in response. Even though it was her brother's cock in her mouth, and it was his cum she was eating, Gail felt very much as if he were merely a means to an end. She felt as if this act was one shared by herself and her dog. Biff's cock just served to enhance Gail's pleasure. But it was Scotty's dog-tongue that was driving her to the heights of ecstasy. It was the warm, furry body between her thighs which Gail was acutely aware of.
Gail's greedily sucking mouth finally drained Biff's cock. Biff groaned and yanked his still-hard prick from her clasping lips. The young boy fell onto his back. His cockhead glistened lewdly with cum. He grinned with satisfaction and turned his head to watch his sister and her dog.
As much as Gail had enjoyed sucking her brother off, she was glad that she could now devote every ounce of her attention and concentration to her pet.
The dog was tonguing her pussy furiously. He moved his furry head in a blur between her openly spread thighs. His tongue fucked in and out and over every inch of her exposed cunt flesh. His snout was completely hidden from view in the soft, fuzzy thatch of her pussy hairs.
Gail closed her eyes and whined with pleasure. Her face was flushed, as were her tits. Little drops of cum stained her lips and she reached out hungrily with the tip of her tongue, flicking the cum up and swallowing it down.
The young girl rubbed and pinched her tits, making her nipples look red and tortured with arousal. She locked her thighs tightly around the dog's ears, trapping his long snout in the hot, steamy crack of her still-orgasming cunt. Her throbbing cuntlips rimmed the animal's snout, clasping greedily around his thrusting tongue.
"Ohhhh, Scottyyyy!" Gail cried, gasping as tremors of bestial ecstasy shuddered through her body. She felt her pet's long, pink tongue swirling around deep inside her obscenely spread cunt. "It feels soooo good, Scotty! Keep licking my pussy until I stop coming!"
The little girl felt as if she would go stark raving mad from the intense sensation of being licked by that big, rough dog-tongue. She could hear the turn-on sounds of Scotty swallowing her flowing juices down. She could hear little whimpers of pleasure coming from deep in his throat, mingling with her own sighs and moans of excitement. She could hear the labored breathing of her brother, who lay near her. She turned her head and saw that Biff was now beginning to jerk his cock, and the sight made her own breathing quicken. She felt every single inch of her pussy throb with pleasure as Scotty's tongue raked over it.
And still, she came.
Gail wondered how her dog was managing to hold back so long. She knew he must be close to coming. She only hoped that when he did come, he wouldn't waste it by shooting onto the floor. She licked her dry lips, thinking how good it would feel to have her pet shooting off into her mouth… or deep inside her pussy.
The next time Gail's orgasm began to subside, Scotty tore his tongue free from her clasping pussy. The animal gave a bark and flopped over onto his back, all four of his logs sticking straight up in the air. His lust-engorged prick stood up stiffly, throbbing visibly, as if begging for help to come.
The Irish terrier turned his head and fastened his pleading eyes on his mistress' pleasure-contorted face.
"What're you waitin' for, Sis? That dog is asking you to suck him off… plain as day," Biff said, fisting his own hard-on and jerking it up and down.
"Ohhhh, yes, Scotty, don't worry, Gail's coming," the teenager said with a little moan as she got up on all fours and crawled over to her pet.
She lowered her face between his hindlegs and took a deep breath. Then, she closed her eyes with anticipation and sucked the animal's cockhead into her mouth. She felt the dog's prick sliding farther into her mouth, its bloated tip striking her tonsils. Gail came again as she began to suck her dog's cock.