"Grow up," she said with a sneer. "We'll shower together. Take your towel off, Jim. I want to see your prick."
"Now listen, kid, I don't know what the hell is wrong with you, but…"
Becky reached over and ripped his towel off. His long pulsing cock sprang forth and she sucked in her breath. "Oh, beautiful," she murmured. "Oh, Jim, that's a hunk of meat!" Her eyes went up to his, shining wildly. "Be honest with me, brother. How many times can you come in one night?"
"Jesus Christ!" Jim exclaimed, shaking his head. "Becky, are you sick? This isn't like you at all, honey."
"How many times?" Becky whispered, stepping close to her lean, powerfully muscled brother. She grasped his hard-on in her fingers and stroked it tenderly, and for a wild moment Jim thought he would burst his load on the spot.
Sister or not, crazy or not, possessed or not, a beautiful naked blonde was playing with his prick and was driving him crazy. "How many times?" she demanded.
"Four, maybe five," Jim said hoarsely. "Listen, Becky, if you don't stop playing with my prick I'm gonna come all over the place."
"Would you like me to give you a blow-job, Jim? Would you like to come in my mouth the first time?" Becky panted, jerking his cock in her hot fist with a lascivious smile.
She is crazy, Jim thought with awe. Could his sister be a raving nymphomaniac? But hell, he realized quickly, did it matter? His own beautiful sister wanted to make it with him in the most vulgar possible terms, and the message in his urgently pulsing rod was achingly clear. He had to decide quickly. He was about to come from sheer excitement, from the electrifying feel of her hot fingers.
"Okay, okay, Becky," he gasped. "We'll shower together. Come on, honey."
They both stepped under the warm spray. Both of them were fiercely excited as they faced each other, naked. All the years of joking and playing and taunting each other, all the wholesome brother-sister love they'd built up, all these feelings only served to add a fiery fuel to the lust both teenagers felt at that moment.
"We'll soap each other down," Becky said. She began by stroking suds on Jim's broad chest, moving her fingers down to his flat belly and the thick dark bush above his quivering prick. Becky avoided lathering his cock and balls, though, and instead reached around to stroke suds on the crack of his hard-muscled ass. She pressed her hot tits into his chest as she did so, grinding her pulsing cunt to his huge erection.
Jim's lips found hers and almost at once her wet tongue slammed into his mouth urgently. His fingers lathered her satiny ripe ass meanwhile, then moved up to soap her beautifully formed tits, pinching gently on her taut nipples.
A moment later Becky had slipped out of his grasp and dropped to her knees, deep moans of excitement coming from her throat. She clutched his rigidly pulsing prick eagerly in both hands, aimed it at her tingling mouth and shoved it in.
"Becky! Oh, wow, Becky! Sin, it's wild!"
Jim Marks had a girl go down on him only once in his life, briefly, awkwardly, and as a simple mechanical prelude to screwing her. This was unbelievable! Under the warm spray of the shower, his own sexy sister was passionately sucking him off with such artistic hunger, Jim's mind reeled. While one of her hands jerked the base of his quivering prick, the other squeezed and fondled his balls. And all the while her burning mouth sucked and coaxed, her lashing tongue whirled and flicked against the tip of his knob to make him groan in surprised pleasure.
Just when he thought he was going to spurt his load into her electrifying mouth, the blonde adolescent released her lips and began licking and sucking on his balls for a new thrill. Jim cupped her head in his hands, grinding his hips, dazed at his sister's lustful eagerness.
"Oh, shit, sis, that's fantastic, honey. Gooooooood! At, Becky, I wanna come now in your hot mouth, baby! Yes, oh YEAH! Ummmm! WOW, WOW!"
Becky was in a state of pure rapture as she devoured her brother's burning prick. Sweet Jim's cock tasted utterly delicious to her, not nearly as gigantic or thrilling as her father's, but still fabulously exciting! She loved the hot pounding feel of his meat surging in waves in her fist and mouth, the sensation of his creamy come building up for a delicious explosion.
With a thrilled shock that only fired her runaway lust, the girl realized that in just the past few days she'd lavished hungry blow-jobs on both her father and her brother, and she loved it with all her fiery soul. She loved eating her daddy's thick molten cum, and now her brother's gushing flood was starting to explode in her frantically sucking mouth. Low frenzied moans issued from Becky's throat as the boiling juice spurted forth, hotter and sweeter than her father's. The jizz streamed down her throat in enormous bursts, wave after searing wave while Becky sucked and jerked on his quivering rod.
Becky realized she was now addicted to going down on men. She craved oral sex, daydreamed about sucking cocks at idle moments during the day, had exciting erotic visions of them in her sleep. Her father's immense, powerful prick had sparked this new hunger and there were moments when she fantasized going down an a dozen boys in succession, smacking her lips and savoring each new fountain of cum.
And once the idea even occurred to her it might be fun to try a girl sometime, just to see what it was like. The prospect of blowing another girl filled her with a weird anticipation, an excitement that left her lusting and breathless.
The last few drops of her brother's creamy jizz seeped into her mouth and with a last ravenous suck, Becky released his deflated rod and stood up, panting.
"How was it, Jim? Did you like it?"
Jim shook his head, speechless. Her innocent mouth had given him the roller-coaster ride of his life and now she asked him if he liked it! But staring at her beautiful face, a sudden twinge of jealousy struck Jim. Where had she learned to give such an incredible blow-job? The thought occurred to him that his own sister might be the most eager cocksucker in town, the laughingstock of school behind his back.
"How many guys have you done that to, Becky?" he asked.
"Just one, honest. You might say I've got a natural flair for it, Jim."
Jim wondered if he ought to ask who, but decided it wasn't any of his business yet. They got out of the shower and dried each other down. The feel of his sister's hot satiny tits and sleek legs beneath his fingers quickly sparked a new powerful hard-on for Jim. He realized Becky had done him a bigger favor than she knew by sucking him off the first time. He hadn't been laid in almost a month and his urgency was so fierce he would have come in two seconds if he'd rammed it into her juicy cunt. At least now he had some staying power.
"Well, I guess I'll see you tomorrow, Jim. Have a nice night, brother."
She started to leave the bathroom when Jim seized her wrist. "What do you mean, sis? Hell, I'm not through!"
She smiled maliciously. "What about that dumpy-assed date of yours? Aren't you going to keep it?"
"Screw her," Jim said heatedly. "I want to spend the night with you. Come on!"
Becky chewed her lip, pretending to think it over. Already she was beginning to realize the power of her lips and tongue and pussy and she hadn't even let Jim have that yet. Once he got it, Becky had a strong feeling she could wrap Jim around her little finger like a ribbon. They could suck and fuck at her whim, whenever she felt like it. And ever since her handsome father had turned her on a few nights ago, the girl felt as if her pussy was on fire. Sex was all she thought about, dreamed about, looked forward to, breathed.
"I don't know," Becky said coyly. "You promise to do whatever I ask?"
"Yeah, sure, anything," Jim said hoarsely. Christ, she was a wildcat! If her tight pussy was half as exciting as her mouth, it would be a night to remember for life.
"Okay, brother," Becky grinned. "My room. And bring a joint, a good one."