The fully aroused girl tossed her head from side to side, her long hair flying sexily about her shoulders. She clenched her teeth tightly and groaned continuously now. She had never been fucked this deliciously before.
She moved her hips around in lust-crazed circles, catching the full force of Biff's big cock up her shuddering asshole and then the full impact of Scotty's dog-cock up her twitching cunt.
She could feel more and more juice running out from her cunt walls, thoroughly soaking the animal's hard prick before dribbling down into her asscrack, where it coated Biff's pistoning prick.
She worked Biff's cock deeper and deeper inside her ass, clutching at it wildly with her ass muscles. At the same time, she rode Scotty's cock until she felt its spongy head smacking up flush against the very back wall of her pussy.
Her dog and her brother were both fucking the holy shit out of her now. Gail loved it. She savored each bone-jarring impact as their pricks surged into her fucked-out holes. She wanted them to fuck her brains out. The harder and deeper and faster they fucked their pricks into her, the more the young girl liked it. And the closer she got to coming.
"God, Sis," Biff growled moments later as his prick jerked convulsively against the tight walls of her ass.
He knew that he was about to come. He crammed his huge prick into her ass even harder and deeper than before, then yanked it free. Again, he shoved his prick into her with hard, brutal fuck-strokes.
"Yeah, yeah, come, Biff!" Gail urged, realizing that her brother was about to release his load inside her. "I wanna feel your cum up my ass!"
"Yeah… soon… real soon," Biff panted.
Scotty continued to fuck his mistress' pussy with long, sure strokes, about to come, himself. He kept his eyes fixed on Gail's flushed face, watching the play of pleasure-filled emotions there.
Gail again urged her brother to come. But this time, she used a different method. She squeezed his cock harder than she had even thought possible with her flexing ass muscles, draining the spunk right out of him.
"Commmiiinnnggg!" the boy cried, throwing his head back and groaning with relief.
He shot his cum-load into his sister's ass, holding his prick still inside her. He felt her grinding her hips back into his and he shot more and more cum into her ass until the thick goo began to dribble out, running lewdly down her legs.
"Whew! All fucked out!" Biff grunted.
He tried to pull his drained cock out of his sister's asshole but she was gripping it so tightly that he couldn't.
"Hey, Sis! Let go!" he hollered.
Gail just giggled and continued to squeeze her brother's cock as hard as she could with her ass muscles.
Biff reached out and slapped her hard across her ass, making her entire body jiggle and bounce with the impact.
"Yeoowww!" Gail cried, involuntarily relaxing her ass muscles.
Biff easily slid his prick out of her ass and lay back on the floor, watching his sister as she continued to take the dog's cock deep inside her pussy.
"Now, it's just you and me, Scotty," Gail murmured, looking directly into the animal's glazed eyes. "And it's your turn to shoot. C'mon, boy, I'm ready to come and I want to come with you! Let go, Scotty! Gimme all your cum!"
Scotty moved his head forward and licked his mistress' tits. He went wild, fucking his cock in and out of her clenching pussy.
"Commmiiinnnggg!" Gail wailed, throwing her head back and feeling her whole body tensing with pleasure and relief.
Just then, she felt Scotty's cock exploding inside her, and she trembled with excitement. She reached out and clutched at the animal, which continued to fuck her while they came together.
The orgasming girl threw her lower body forward and back, fucking her little cunt on the dog's pistoning prick just as hard and fast as she possibly could.
"Yes! Yes! Come! Come inside me!" she cried, feeling waves of bestial pleasure cascading through her cunt.
Her pleasure spiraled upwards as she felt the dog's cum flooding her pussy. She was delirious with joy. She felt as if she could never possibly get enough of Scotty's dog-jism inside her.
Scotty howled and barked as he came. His eyes were red. His nostrils were flared. He was panting noisily.
"Yieeeee!" Gail screamed as her orgasm peaked.
She loved the thrilling sensation of having both her pussy and her asshole filled to the brim with hot, thick cum. And she was delighted that Scotty was able to continue to fuck her as he came inside her pussy.
The dog howled again as he felt his mistress' pussy spasming and snapping around his cock. Her hungrily climaxing cunt was eating his cock alive, and he thrilled to the delicious sensation.
"I'm still coming!" Gail shrieked as her orgasm continued to blast through her body. "God, but it's good!"
She felt the thick cum spilling out from her asshole and her cock-stuffed pussy. The creamy stuff dribbled down her legs and splashed onto the floor where it bubbled on top of the carpet.
"Keep fucking me, Scotty! Fuck my brains out!" she wailed.
Scotty looked at his mistress with a dazed expression and continued to fuck her as they came together.
Gail sighed. She knew that she would never again try to win her parents' love. She knew that not only would that be impossible, but that she no longer needed them. She now had the love of her brother… and of her dear, dear Scotty. That was all she needed to be truly happy.