She continued to work her strong throat muscles around Scotty's bucking prick. Even though Biff's cock had felt good in her pussy and had made her come, Gail was glad that it was no longer inside her. Now, she could turn her full attention to her dog who was, after all, her most favorite lover in the whole world.
Scotty's body lurched up from the floor, then crashed back down. His eyes glazed over and he let out a series of long, wailing howls as he prepared to come.
Just then, a thick, hot gusher of dog-jism shot from his large cock-knob and splashed directly into Gail's throat. It was immediately followed by another spurt of cum, and then another. Glob after glob of the thick, creamy goo was propelled violently from the dog's cock and slid down Gail's clenching throat.
"Way to go, Sis!" Biff cheered from the sidelines. He reached beneath his little sister's chest and stroked her tits while the young girl continued to swallow her pet's dog-jism.
Gail felt her own juices pouring out of her pussy and running down her legs. She knew that her bedclothes would be stained with cum and pussy juice by the end of this torrid three-way fuck, but she didn't care. In fact, that knowledge only turned her on more, and she swallowed Scotty's cum even more greedily.
Gail came again as she drank the last of her dog's jism. She slipped Scotty's softening prick out of her mouth and fell over onto her back, grinning with satisfaction.
"That was fantastic!" she said, her eyes on Scotty.
The dog lay next to her, putting his furry head across one thigh. She reached out and stroked his head, almost forgetting that her brother was there.
"You little slut!" Biff growled.
But then he laughed and Gail joined in, the sounds of their mutual merriment mingling with Scotty's excited barks.
CHAPTER TEN
All the rest of that Saturday, Gail fucked and sucked her brother and her dog. Late that night, the three lovers collapsed in a tangled, exhausted heap on Gail's bed and slept soundly until the next morning.
While Scotty waited impatiently at home, Gail and Biff attended church services. They both had a difficult time concentrating on the minister's sermon, but when he began to preach against the evils of the flesh, they sat up and took notice. Gail and her brother exchanged excited glances as they heard the preacher drone on and on about carnal sins and depraved acts. His sermon aroused both of the teenagers until finally Gail moved her hand over to her brother's lap. Under cover of his hymnal, she began to squeeze his growing hard-on through his pants.
By the time the services ended, Gail and Biff were the first ones out of the church, anxious to get home and start some serious fucking.
"Well, well, Gail and Biff," the minister said, meeting them at the door where he always stood to greet his departing parishioners. "It's so refreshing to see two wholesome teenagers like yourselves attending church services. And I hope you enjoyed my sermon this morning."
"Oh, yeah, I'll say!" Gail giggled, rolling her eyes up at her brother. "We got a lot out of it!"
She heard a startled gasp next to her and she looked to see old Mrs. Wynant staring wide-eyed at Biff's hard-on, which was making the front of his pants tent out obscenely. Gail giggled again and grabbed her brother's hand, both of them dashing away.
The youngsters entered their house a few minutes later, still laughing over the incident at church. They were greeted by Scotty, who barked loudly and wagged his tail in greeting.
"God, am I ever horny!" Gail cried, reaching down to pat her dog on his head.
"Me, too! That preacher's sermon was turn-on today!" Biff said, already undressing right there in the living room.
"Oh, great idea," Gail said, watching her brother. And she quickly stripped off her own clothes.
Scotty watched the brother and sister excitedly, his body beginning to tremble, and his prick beginning to harden.
Gail plopped herself down on the living room floor, her eyes moving back and forth from her brother's hard cock to Scotty's prick, which was growing thicker by the second.
The young girl began to make low, animalistic sounds. Scotty moved to her side and lay down next to her. Biff moved to Gail's other side and sat down, looking at her expectantly. With one hand, Gail began to rub Biff's thick cock. She watched the deep slit in its throbbing head as a single drop of pre-cum oozed out. She smoothed the pearly drop across the smooth prickhead while the boy groaned thickly.
"Unnnhh, yeah, Gail, honey, that's it! Rub my cock hard! It's such a turn-on, the way you handle my prick!" Biff grunted.
Her brother's obscene words aroused the teenaged girl even more. With her other hand, she reached out and clasped it around Scotty's pulsating prick. She began to rub that hard cockmeat as she continued to jerk off Biff's enormous cock.
Scotty whined and whimpered with pleasure as he felt his dog-cock growing bigger and harder in his mistress' gripping hand.
With a lewd grin, the excited young girl moved her fists up and down both of the throbbing pricks. She stroked them from their meaty bases up the thick stalks to their broad heads and then back down again.
"You sexy little slut!" Biff growled as his cock sputtered out a thick bubble of pre-cum. "Watching you jerk off that dog… while you jerk me off… what a turn-on!" he panted.
Having both her dog's and her brother's cocks in her hands while she sat naked between them was a real thrill for the little girl. She felt her little pussy drooling out a steady stream of juice. And she could feel her clit stiffly sliding out of its protective sheath.
"Urgh, I'm sooo horny," she purred, glancing first at Scotty's throbbing cock, then at Biff's, while she continued to jerk them both off.
Biff groaned with excitement and thrust his muscular ass up from the floor, shoving more of his prickmeat into his sister's fisted hand.
Scotty shuddered with pleasure and gazed up at his mistress with adoring eyes.
Scotty's prick had risen to full erection under the girl's skillful hand. He growled with lust as she stroked his prick up and down, over and over again. She moved her fist harder and faster with each eager stroke. The red dog-cock was throbbing and more than ready to fuck.
Biff's cock was pounding. It was an angry-looking purplish color. His cock strained hard as it pulsed violently against the palm of Gail's hand. She could feel the big throbbing veins running up and down the full length of both of the meaty pricks in her hands.
"God, Sis, I don't think I can take this much longer without coming," Biff groaned a few seconds later.
Scotty barked, as if agreeing.
"Okay, it's time," Gail said thickly, pulling up on the two cocks as hard as she could.
"Time for what?" Biff asked huskily.
"What do you think?" Gail asked breathlessly, her tits bouncing about as she jiggled in excitement. "I want you both to fuck me now!"
"Wait a minute, Sis," Biff laughed. "Did I hear you right? Are you telling me that you want me and that dog to fuck you… both at the same time?"
"That's what I'm telling you, all right!" Gail said with a little girlish giggle.
Biff grinned and stroked the insides of his sister's silken thighs. Then he slipped his hand beneath the girl's ass and gave it a hard squeeze.
"Oh!" Gail gasped, and then she laughed again.
She looked over toward Scotty and saw that the dog's cock was harder and bigger than ever. At the same time she felt her tight asshole puckering with desire. And she knew that she needed to feel both Scotty's dog-cock and Biff's boy-cock inside her-one in her cunt and one in her asshole.
"Why don't you suck on my cock a little while first, Sis?" Biff asked thickly. He fisted the base of his big prick and squeezed it.
"Mmmmm, good idea, then you can stick it inside me!" Gail gurgled.
And with that, she bent low and licked the head of her big brother's prick.