"Go ahead," he laughed, "I'll watch."
"Oh, no," Betty smiled, stretching her pretty legs out in front of her. "I won't do it then."
"Go on," teased Jeff, suddenly wanting to see his sister's pussy for the first time.
"Promise not to tell the folks?" she nervously asked.
"I promise," her brother grinned, wondering if she'd really do it.
"Okay," Betty giggled. "But you've gotta take your trunks off, too."
"Bullshit," laughed Jeff. "I'm not gonna stand bare-assed naked in front of my little sister."
"You're chicken!"
"I am not."
"Then take your trunks off," she teased, starting to remove the top of her bikini.
Jeff's mouth dropped open with shock when her cute young tits spilled out nakedly in front of him. The sight of her swollen pink nipples was something he'd never forget.
"Hurry up," Betty teased, turning her back to him and dropping the bottom of her swimsuit.
Jeff just had a fleeting glimpse of the soft white globes of her ass before she plunged into the pool. Slowly removing his trunks, Jeff jumped into the water with her. The young man couldn't keep his eyes away from her bouncing tits as she splashed around in the pool. The youth soon had a throbbing erection from looking at his little sister's tits.
When they finally got out of the water, Jeff kept his back turned, not wanting Betty to see his horrendous boner.
"What's the matter, Jeff?" she teased. "Are you ashamed of your thing?"
"Of course not," he stammered.
"Then let me see it."
"No!"
"God," she giggled. "You're a real nerd."
"Okay!" he defiantly snapped as he quickly turned around and faced his little sister.
"Jesus Christ!" gasped Betty when she saw the huge length and thickness of his big stiff cock.
The girl stared in stunned silence at Jeff's big throbbing prick. Every guy in the neighborhood had been screwing her for years, but she'd never dreamed that anyone could have such an incredibly big cock.
"Well," he finally blurted. "Are you satisfied?"
"My God, Jeff!" she gasped. "It's so big!"
Unable to believe the size of her brother's majestic boner, she picked a towel up from the deck of the pool and spread it out on the lawn where she spread her naked body out to enjoy the sun on her bare flesh.
Dropping to the grass by her, Jeff stared up between her slightly parted legs.
Looking at his little sister's cunt, he saw that her fluffy mound of damp pubic hair shone like molten copper under the warm rays of the sun. The soft pink wetness of her juicy cuntlips glistened like dewdrops in the early morning air. The thin film of pussy juices that coated the inner flesh of her slightly open slit looked so warm and slippery to the excited youth, the soft flaps of her coral-tinted pussy reminded him of flower petals after a warm summer rain. Jeff was thoroughly convinced his sister's cunt was the most beautiful sight in the world.
"Jeff?" she asked, opening her eyes and seeing him staring up between her legs. "Have you ever done it with a girl?"
"Done what?" he asked, not sure of what she meant.
"You know," she giggled. "Have you ever screwed?"
"Gosh, no." Jeff blushed. "Have you?"
"Sure," she smiled, seeing an excited expression in his eyes. "Bobby Walker from around the corner got into my pants three years ago."
"What was it like?"
"It was kinda scary at first." She giggled. "But shit, it sure felt good after we got going."
"Have you ever done it again since then?" asked Jeff.
"Gosh, yes, silly," she smiled. "Dozens of kids have laid me."
His stiff prick began throbbing even harder at the thought of a cock being stuffed into her cute little pussy.
"Jeff?" she whispered, reaching for his hand. "Will you play with my pussy?"
"Gosh, Betty," he hesitated. "You're my little sister."
"So what! I've got a cunt, haven't I?"
The inexperienced youth could hardly believe what was happening as she guided his hand down to her red-fringed pussy. His eyes moved from her beautiful young face down across the softness of her firm tits, the gentle curves of her slim waist and hips, and on down to where she was trailing his fingers through the wispy hairs of her crotch.
A shudder of excitement shook his entire body when Betty pressed the tip of his finger into the moist hotness of her slippery little pussy. He couldn't believe that a girl's cunt could feel so fucking good. There was no way to explain the excitement of touching the slippery hot flesh inside her fuckhole that was tucked so neatly between her cute legs. The juicy softness of his little sister's tight hot cunt was absolutely marvelous.
"Oh, Jeff," she whispered, rubbing the end of his finger against her hard clitty. "That feels so good, honey. Make me come."
Realizing how much his cute kid sister enjoyed it when he rubbed that hard little button, he continued fondling her erect clitoris as she writhed around on the towel. She was soon humping and thrusting her hips and cunt into the air as her brother's finger worked more confidently around at her dripping hot pussy.
"Oh, Jeff!" she panted. "I love it! I love it!"
"Am I doing it right?" he asked, wanting to please his cute little sister.
"Oh, yes," she moaned, putting her arms around him and drawing his face down against her naked young tits. "Suck my tits, honey! Suck my tits!"
He nervously reached his free hand out to touch the velvety softness of her ripe tits, to gently squeeze the lush resilient flesh. The feel of her quivering tits only served to further arouse the excited boy.
"Oh, Jeff," she moaned, feeling her nipples springing into instant firmness.
"God, you're cute," her brother panted as his hand cupped her tits, gently squeezing them together.
Then, opening his mouth wide, he covered her stiffly excited nipple with his hot, wet lips. Trembling violently, her tit felt like it was going to burst open with excitement.
"Oh, Jeff," she sobbed, writhing her cunt up tighter around his deeply embedded finger. "That feels so damned good."
Momentarily releasing her throbbing nipple, he pressed his open lips against her, their tongues flashing in and out of each other's gasping mouth. With their tongues swirling juicily together, Jeff began thrusting his finger deeper and harder into his cute sister's squirming pussy.
"Oh, Christ, Jeff!" she shrieked, pressing his mouth down over her tit again. "That's the way, honey! Do me good!"
Planting her bare feet flat on the towel, Betty began wildly humping her slippery cunt up and down over her big brother's plunging finger. Her entire young body was writhing in ecstasy as she felt a thunderous orgasm building up deep in her shuddering loins.
"That's it, Jeff!" she squealed. "Make me come, honey! Make me come!"
Sucking feverishly on her swollen nipple, Jeff began plunging his finger faster and faster into the sucking hotness of her scalding young pussy.
"Jeff! Jeff!" she screamed as her tight little pussy climaxed wildly around his finger. "I'm coming… commmiinngg!"
The beautiful little redhead trembled and jerked for several moments before she was able to gain control of herself.
"Oh, Jeff," she finally whispered. "That was so fuckin' neat."
"You sure acted like you enjoyed it," he smiled.
"Poor darling," gasped Betty, staring at the big hard-on that was throbbing up from between his legs. "It looks like you need some relief."
Reaching out, she gently wrapped her soft young fingers around the gnarly thickness of his huge cock. She suddenly had a wild desire to feel his big boner stuffed in her cunt, but she was a bit afraid that she could never handle a prick as large as Jeff's. All the other guys who had screwed her during the past two years had cocks about half the size of her brother's. Betty was rather scared that his huge prick would rip her little pussy wide open, yet she wanted to feel it in her aroused cunt.