"Come on, Sandy," Becky said. She pushed the fine strands of yellow hair from her face then stroked their pet's barrel chest. "Do it again." Both girls stared at the dog's extended penis.

The two girls, Becky, aged nineteen, and her sister, Sandy, aged eighteen. In the front room of the ramshackle farm house, the girls sat Indian-style on the cracked and faded linoleum. The skirts of their cotton dresses splayed out over the large yellow and green flowers like parachutes. The cool linoleum tingled Becky's buttocks through her worn-thin panties but did nothing to cool the simmering in her already-damp crotch. Sam, their five year old German shepherd lay on his side between them, his back legs spread, as if inviting the older girl to touch his aroused genitals again.

"Come on, Sandy, hurry up, will you," Becky said. "Ma'll be back in from milking before long, and I wanna see how long Sam's thing gets!" Then she added, "Besides, I can tell that you want to feel it some more."

"Think Billy Bob was kidding yesterday?" Sandy asked, fairly panting, her brown eyes glued to the quivering, bright red sword. "I mean about girls doing it with dogs."

"I don't know," the younger one breathed, watching her sister's hand, as it neared the dog's prick again. "I thought so, but what if he wasn't...." The large, silver and tan dog, his tongue lolling to one side, waved four inches of wet penis in the air. "Go on, Sandy, I dare you to touch it again."

"Oh jeeeze, look at it!" Sandy gasped, as her hand wrapped around the hairy foreskin and more of the red sword slid out. "It just keeps growing" "I thought Billy was just teasing us too, but..."

Sandy glanced at her younger sister then toward the kitchen door. "But what if Ma--" the darker-haired girl whispered, as if their mother were listening from the barn.

"Just hurry up!" Becky pressed her. "Play with it some more before Ma does comes back!"

"Ok, ok," Sandy said, holding onto the prickly sheath.

"Jerk on it, Sandy. Like Billy did, when you said that he let you watch him jacking off yesterday."

"Shit!" Sandy gasped, tugging the hairy sheath slowly up and down the dog's shaft. "How long is that thing?"

"I dunno, but don't stop!" Becky giggled, enthralled with the dog's quivering pecker. "He likes it!" The shepherd whimpered, his hips starting to buck. "Come on. Let me feel it now. Hold his front paws, so he don't scratch me."

Sandy let go of the furry sheath and caught the dog's front paws in her hands. "Shit. I can't hold him from this side. He's too strong! Wait a sec ...." She got to her knees, one on each side of the dog's head, his long snout between her open thighs. "Now do it. Touch it, Becky!"

Instead of grabbing the sheath, Becky, her eyes as big as saucers, spit on her right hand and closed it around the inch- thick sword. "Oh jeeze, it's hot, Sandy!" The dog humped her hand, flung his head back, and pressed his snout hard into the older girl's crotch, lapping at the cotton of her dress. "Oh shit! He's trying to lick you, Sandy! Let him! Pull your dress up and see if he'll lick it!"

"I can't let go of his feet, stupid," Sandy retorted.

"Here, let me...," Becky said, leaning forward. Her free hand flipped her sister's skirt up. "Come on, Sandy, you said that you let Billy lick you down there, and you liked it! Oh gawd, Sandy! You're not wearing any panties!" Since the two girls slept in the same room and often bathed together to save hot water, Becky had seen her sister's pink pussy many times; this time, it looked different. Her sister's swollen labia glistened wetly under the covering of light brown hair. The stiff nubbin of her clit peeked out from the top of her young cunt. She fought back the urge to feel Sandy's juicy sex.

"Panties all dirty," the older girl gasped, her eyes closing, as Sam's tongue flicked out at her damp slit "Oooo shit, Becky. He's really licking my puss!"

"See if he'll stick his tongue in it," Becky said, staring at Sam's pink tongue, as it swiped up and down her sister's gash. "Come on, Sandy, you said Billy did it."

Sandy slid forward a few inches and opened her thighs wider, lowering her cunt. Her eyes flew open again, as the long tongue speared her young hole. "Ooooo, gawd," she groaned. "He's got his tongue inside me!"

The knot at the base of Sam's prick bumped against the bottom of Becky's hand, and she looked down again. "Oh shit! Look at that gawd-awful lump!" The tiny hole at the end of the long point winked at her. "Oh no, Sandy, I think Sam's going to shoot it off on my hand!"

"Becky!" the older girl panted, her hip rocking slowly, her slender thighs taut. "Let him do it! See if he'll cum in your hand!"

Sam growled from deep in his stomach, his haunches jack- hammering the floor beneath him, his tongue lapping the older girl from her tiny clit to her tightly puckered shitter. The first thick glob of white juice spewed out of the dog's swollen member to coat the younger girl's hand. "Oh shit! He's cumming!"

"Ohhhh fuck!" her sister hissed. "So am I!"

Becky tore her eyes from the tip of Sam's cock and hiked her sister's dress up higher as Sandy's right hand let go of Sam's paw and dipped between her spread thighs to find her horny cunt. Becky stared, her breath coming in heavy rasps, the smells of girl sex and doggie cum making her giddy, as Sandy used two fingers to open her slit. The older girl moved her hips to keep Sam's tongue battering her dark pink clit.

More of the dog's seed spilled out and over her fingers, as Sandy grunts mixed with Sam's guttural growls in the teenager's ears. Becky could see Sandy's clear juices flowing out of her well-licked hole. "Gawd yeah, Sandy! He's licking it up!"

"Ohhhhh gawd!" Sandy groaned again, her entire body shaking. "Ahhh gawd, It feels-- I'm cumming so hard! I never knew-- I never thought-- Oh shit, that feels so good!"

Sam's haunches slowed, as Becky's cum-soaked hand released his member and wiped his sperm on his tummy and chest. The dog licked the older girl above him, until she finally fell to one side, completely spent. Laughing, she rolled onto her back. "Oh gawd. Oh damn. That was wild," she panted. Sam curled up and gingerly licked his spent tool.

"But what about me?" Becky groaned. "I'm so hot now! I didn't get to do cum!"

"Oh well," her sister said, still giggling. "Guess you'll just have to--" The slamming of the kitchen door in the back of the house cut her off. "Oh shit, Ma's back!" Both girls, laughing insanely, jumped up and ran for the front door, leaving the dog to nurse his genitals.