Despite her repulsion at having a dog-cock in her mouth, she found herself tingling in every cell of her body. She felt so horny and dirty that she reached up and ripped the titcups off her tits, massaging her swollen tit-globes as she tightened her lips around the sliding dog-cock and fucked her crotch on Shawn's tongue.
"What a juicy slut!"
Shawn slurped up the juices bubbling from her throbbing cunt. He spread her crotchlips wide with his thumbs so he could get his lips around her clit and suck it.
Cindy almost came as Shawn sucked and chewed her clit. Muffled squeals came from her cock-stuffed mouth. She would have come, but Shawn stopped sucking just in time.
He kneeled up behind her and rubbed his prick up and down between her swollen crotch-lips. As his prick sank up her pussy, the head of his long fucktool slipping into the mouth of her womb, shivers of pleasure shot through her body and her pussy began to clutch and suck. She groaned with pleasure.
"Ohhh yeahhh!" Shawn gripped her ass as he slipped his cock in and out. "You got a crotch-hole like a mouth, big sister. Mmm, I could fuck it all night!"
Cindy moaned, gyrating her ass as she fucked Shawn's cock, bobbing her head as she blew the Dane's lusting fuckrod. Fucklube from the hound ran down her throat like warm sap. The dog whimpered and his prick squirmed, the tip of it tickling her tonsils. Cindy tightened her lips, flapped her tongue. The dog howled.
"What did I tell ya, boy? She gives damned good head." Shawn rammed his cock faster in her sucking cunt, grinding into her as deep as he could go. "Man, you oughta feel her pussy, boy. It's better than her fucking mouth!"
The dog's tongue hung out, dripping spit all over Cindy's neck and upper back. His eyes rolled as deliriously as Shawn's eyes as Cindy pleasured his dog-cock. His claws sank deeper into her back as he rammed his red-hot dog-dick down her throat and banged his furry loins against her face.
Cindy growled like an animal, letting herself go completely. Here she was, fucking an animal, so she might as well make sounds like one. She had never felt so wicked and dirty in her life, nor as good. Taking on Bill and Jeff simultaneously had made her feel more intensely than ever before, and now, taking on both her stepbrother and a dog simultaneously made her feel even more intensely. There was something ultra-wicked about fucking your own stepbrother, something indescribably filthy and exciting about sucking on the slimy cock of a dog. The wickedness of it, the filthiness of it all thrilled her beyond anything she'd ever imagined. She had never felt so free, so pleasured.
"Ooooh baby, I'm gonna shoot my wad! I'm so fucking close!" Shawn chewed his lips as he worked his cock in circles inside Cindy, as he ground his hard belly against her sexy round ass. "Mmmm, this feels great!"
If it felt great to the boy, it felt even better to Cindy. Her pussy was so tight and swollen inside that it felt as if it would split with a thousand itchy fissures. Her loins throbbed, and the pulsations moved in waves through her body, making her nipples swell and twitch, making her pink toes curl. She rotated her ass, trying to get the boy's cock to fuck in deeper. At the same time, she nearly sucked the slippery cock out of the dog's loins. She wanted to feel the cum squirt down her throat, up her cunt.
"Come on, boy, get them rocks off!" Shawn urged the dog. "I wanna see you get them big fuckers off. I wanna see Sis eat your cum."
The dog let out a whining growl, as if he understood Shawn perfectly. His cock pistoned, sizzling against Cindy's tongue, leaking dog-lube down her undulating throat. His claws dug in, nearly breaking Cindy's skin. His glazed eyes rolled back as Cindy gave one last hard suck, and his dog-cum exploded into her throat. He howled sharply as he fed Cindy his load.
Cindy's eyes nearly popped out at the feel of the dog's spunk. It was as if she'd been given smelling salts. She choked repeatedly as the streams of bitter spunk shot against her tonsils.
"Drink it, Sis!" Shawn said excitedly. "Swallow that dog's jizz! Tastes good, don't it? Man, this is hot!"
He fucked his splitting-hard teen cock up his stepsister's juicy crotch as he watched her suck off the big hound. The expression of ecstasy on the dog's face, his whimpers of pleasure and lust, fueled Shawn's own lust, increased his own pleasure to the point of no return. He rammed his cock in to the hilt, grinding his smooth belly against his stepsister's smooth ass. Cindy's cunt gave his cock a hard squeeze and he ejaculated into her.
"Ahhhhhh!" the boy groaned. "Unh, uhhh, oh yeah!" He grunted with each flex of his cock, with each spurt of his jism up Cindy's sizzling crotch. As his young nuts pumped out their spunk, the canine nuts of the Great Dane pumped dog-spunk down Cindy's gullet.
An electric current shot through Cindy's body. The cock in her mouth and the cock in her cunt quivered and squirmed in unison, delivering delicious fuck-sensations to her lust-inflamed tissues. With each pulsation of the pricks buried in her flesh, with each ejaculation of the milky male fluid into her sucking fuck holes, jolts of electric pleasure shot through her and she gasped with the wild sensations. Grinding her ass against her stepbrother's belly, sliding her mouth up and down the Great Dane's prick, she writhed with ecstasy as orgasm swept through her like a prairie fire.
"Oooh, oh damn!" Shawn clung to his jerking stepsister's ass, watching her come.
From the way she was grinding her ass and writhing, he could tell she was really feeling her contractions. Her pussy squeezed and sucked so hard that his own orgasm was renewed. Just when he thought his spunk-shooting had slowed to a rhythmic oozing, Cindy's pussy gave such a teasing suck that he thought his balls would be sucked out through his prick. He groaned with pleasure as several more hot spurts escaped his young cock and drilled the depths of Cindy's womb.
"Man, what a crotch! What an ass!" The boy collapsed over her, hugging her loins as he rubbed his belly at her gyrating asscheeks.
Cindy prickled over every inch of her body. Waves of orgasmic sensation melted her, made her want to collapse and melt into the ground. The flexing cocks inside her drove her wild. She kept sucking, kept wiggling, kept growling until she felt the rigid fuckrods soften.
As the spent pricks slipped out of her, she collapsed forward on the ground, watching the Dane's limp red cock retract into its sheath. A strand of grayish dog-jizz trickled from one corner of her mouth.
Shawn sat beside her, pulled her into his lap, caressed her tits. She groaned in his arms as they kissed, their tongues darting in each other's mouth. She felt completely relaxed, completely content, and, strangely, not one bit guilty.
CHAPTER SIX
It didn't take Shawn's teenage cock long to turn rigid again and to stand up like a flagpole. As the hot cylinder of turgid fuckmeat throbbed against Cindy's hip, a shiver of desire flashed through her and she wrapped her hand around Shawn's cock.
"It's so big!" she whispered.
"Nine inches on the head," Shawn said. "And if you don't believe it, you can measure it."
"I believe it," Cindy said. "Put it in me again."
"Exactly what I intend to do," said the boy. "But we're gonna do it a little bit different than you're probably used to." He rolled Cindy out of his lap and stood up, his cock pointing at the sky. Then he yanked Cindy to her feet. Before she could throw her lusting body in his arms again, he scrambled up on the stallion.
"Up you come, big tits." He reached his hand down to Cindy, and she let him yank her up in front of him.
Cindy giggled like a giddy high school girl as her legs wrapped around the warm flanks of the stallion. She was faced away from Shawn, with his hot cock throbbing against her ass and his arms around her.