Penny Rider, still a virgin, tiptoed past the bathroom door and paused. She heard the shower running and knew Billy was inside.
She heard him singing as she moved her ear to the door. If he was showering, he was naked. She liked spying on her brothers when they were undressed. She licked her lips. She always watched them when they thought she wasn't looking. It was her favorite game, spying on her brothers when they were naked and sometimes even jerking off.
It had been awhile, maybe as long as a year, since she'd seen Billy's cock. She wondered if it had grown. Was it as big as Jimmy's? Had he grown more hair on his crotch and did his balls hang down heavily, like Jimmy's?
Her virgin cunt twitched and felt hot and heavy between her legs. On an impulse she pushed the bathroom door open slightly and peeked inside.
Billy chose that moment to shut off the shower and step out into her line of vision. He didn't see her as he reached for a towel.
She saw all of him, however. Her eyes widened as she gazed at his prick. It was as big as Jimmy's and he had indeed grown more hair on not only his crotch, but on his balls too.
The horny teenager held her breath. Both her brothers were turning into studs. How exciting!
Billy dried his crotch and hummed a tune as he examined his face in the mirror over the sink. She squinted to see into the room. He was looking for signs of a beard on his chin. She almost giggled.
But what drew her attention was his prick. It was long and thick and dark pink. She became so engrossed in his cock she failed to see him spy her in the hallway.
"I know you're out there," he said. "What the fuck do you think you're doing, Sis?"
When the door was pulled open, she fell forward, landing against the naked boy. She was too stunned to speak, but his cock stabbed her hip and they both sprang back.
He quickly wound the towel around his waist, hiding his prick from her probing eyes. "Hey, get out," he said.
But Penny became bolder and grabbed the towel, yanking it down. "I like to see it," she said.
"Jesus Sis, you're crazy," he said, trying to cover himself. "Do you know what you're doing?" He jerked the towel from her hand and tried unsuccessfully to tie it around his waist.
"Let me see," she giggled, grabbing the towel and pushing it behind her back. "You used to let me see your thing. Why can't I see it now?"
"Oh, Jesus!"
It was true that as children they had played doctor and nurse regularly. Now as Billy gazed at his younger sister he felt confused.
In a way he wanted her to look at his cock and admire him. On the other hand he knew it was wrong because his parents had instilled certain values in all their children.
Penny clutched the towel and openly stared at the naked boy. "Your cock got real big," she said, her eyes shining with admiration.
"Mom'll kill you if she finds out you're doing this," he said, suppressing a grin.
"Hey, it's lifting up," Penny said.
The boy felt a twitch in his balls. Damn it, he was getting turned on and by his own kid sister.
"Jesus, you better get out of here," he said.
The little brunette let the wet towel drop to the floor. When Billy didn't reach for it, she moved closer. "I like looking at your thing. It's sort of cute."
"Jesus, cute!" he groaned.
She moved closer, without thinking, reaching for his prick. "I don't mean cute," she said. "I mean horny and masculine."
"Hey, cut that out!" He moved back, hitting the wall. "Jesus, Sis, you can't do that."
"Just let me touch it a minute," she said.
"You're crazy," he said, but he stood still while she touched his cock.
He had noticed in recent years that his sister was growing into a very pretty young lady. She was built too. She had big tits like their mother and a nice round ass. He had wet dreams about her sometimes, but it had never occurred to him that she was horny too.
"It feels funny, but it's nice," she whispered, lightly running her fingers over his fuckpole.
As she spoke she stepped back and gazed down at the prize in her hand. The boy stared at her dumbly. He and Jimmy talked about cooze all the time, but they'd had little experience with sex. Now here was Penny, his own sister, squeezing his prick. His confusion increased. It felt good, but he knew he ought to make her stop.
"Are you a virgin?" he said.
"Yes, are you?"
"Hell, no." He lowered his eyes to avoid hers. He was a virgin, but he didn't want to admit it.
"Are you really not a virgin?" the young girl said.
"Shit, I've done it plenty," he said. Actually all he'd ever done was touch a girl's tits and french kiss. Once a girl let him touch her, down there, but only for a minute.
"Jesus, what about Jimmy?" he said.
"He's been around too," the boy croaked.
The way she was touching his cock was driving him crazy.
"It's getting even bigger," she said.
He was beginning to forget that Penny was his sister. He covered her hand with his. "Touch it here," he said.
She touched the tip of her fingers to the rim under his cockhead. "Here?" she said.
His cock rose up in her hand. "Yeah, that's okay."
"God, it's getting hard," she said, one hand cupping his balls and the other caressing his prick.
"Well, what did you expect?" he said. He was finding it difficult to breathe. Somewhere in his mind he knew he ought to stop her, but he was helpless. Her hands on his cock and balls felt too good.
"I watch you sometimes," she said, lightly stroking his prick.
"Yeah, when?"
"When you're getting out of the shower, like today, and sometimes when you're in your room."
"Well, I watch you sometimes too."
"Honest?" she grinned. "Did you ever see my pussy?"
"Yeah, once," he said.
"Did you notice all the hair I've got now?" His cock jerked in her hand. "Yeah, I noticed."
She pumped his prick until the skin pulled tautly over his hard-on. She breathed rapidly and felt the oozing moisture between her legs.
"Are you gonna come?" she said.
"Maybe," he gasped.
"Are you gonna come on my hand?"
"Yeah, if you let me."
"I'd rather you fucked me."
"Huh?" Sweat poured down his temples.
"Honest, I'd really rather you fucked me than come on my hand."
He groaned but didn't speak. He was filled with mixed emotions. He wanted to fuck her. God, how he wanted to fuck her. He was dying to lose his cherry and tired of jerking off. But she was his kid sister. If his folks found out they'd skin him alive.
"Please," the teenage girl whispered.
"Let me think a minute," he said, his cock jutting out from his crotch.
"You know you want to," she said.
"I gotta think."
His balls ached. God, they must be turning blue. He had to give her an answer soon or he'd dump his load on her hand.
Then Penny did something that took the decision out of his hands. She dropped to her knees on the bath mat, opened her lips and took the head of his prick into her mouth.
"Jesus, Sis!" he hissed. He used every ounce of control he could muster to control his orgasm.
She only held his cockhead in her mouth a moment, but it was long enough to convince him he had to fuck her.
"Okay, Sis, but you better stop or I'll come in your mouth."
Giggling, the teenage girl defiantly licked her tongue over his cockshaft. "You better not," she said.
But she was wise enough to know his orgasm was close. She gently cupped his balls with one hand and licked his cockhead. She tasted his pre-orgasm jism and shivered. Is this what jism tastes like? If so, she wanted him to come in her mouth.
Suddenly he pushed her head back and grimaced. He pulled her to her feet and backed her against the wall. "Sit up there on the sink and I'll fuck you," he said.
She was very turned on, but the thought of fucking here in the bathroom didn't appeal to her. "How can we fuck if I'm sitting on the sink?"
"Then get down on the floor."
She felt her knees give out under her as she sank down onto the bath mat. She spread her legs and for a moment Billy gazed down at her pussy.
She wore a short skirt and no panties and her pussy aroma was strong in the small bathroom. Billy struggled to breathe as he hovered over her. The pink lips of her cunt winked open in invitation. The light sprinkling of dark hair made him groan with raw desire.
He'd seen a few pussies in magazines and one of his girlfriends once showed him her cunt. But his balls ached as he moved down over his sister to touch the vulnerable-looking slit between her legs.
As he touched her cunt she reached for his cock. Her eyes were wild and glittering. She wanted his cock inside her breaking her cherry and bringing her off.
"Hurry!" she said. "I'm so hot!" The floor was like marble on her back, but it didn't matter. All that mattered was having his prick inside her.
The boy muttered as he fell over her. His cock wedged between her round thighs, missing her cunt, but hitting her hairy mound.
"Stick it in," he said.
"I can't, you stick it in!"
"What if I hurt you?"
"You won't hurt me."
"But your cherry."
"Will it hurt?"
"I think so."
"Oh, God, I don't know…"
She tried closing her legs, but it was too late. Billy held his prick against her cunt and tried pushing in.
"Let me stick it in," he said.
"Can you do it?"
"Yeah, if you stop wiggling around."
She lay perfectly still. "I'm not moving," she said.
He pushed forward. Her cunt felt hot and wet on his cockhead. He shut his eyes and grimaced. Just the feel of her gash on his cockhead made him want to let go and come.
"Don't hurt me," she said.
His heart pounded with passion, but he hesitated. "Jesus, Sis, you're a cherry. It's bound to hurt." How he wanted to feel her pussy wrapped around his cock!
She pulled her knees back to her tits as his cockhead lodged between her cuntlips. "Push it in!" she whimpered, wrapping her arms around his neck.
He lurched forward, driving his prick into her virgin snatch and ripping her hymen. "We're fucking," he said.
"Is it in?" she said, relief flooding her. It didn't hurt a bit.
"Sure, it's in. Jesus, your cunt is tight."
Neither youngster had to be told what to do now. Their bodies took over and Billy began pumping his cock in and out of her swampy depths.
Penny was in heaven. With every thrust his cock seemed to rub against her clit. Her clit was sensitive from years of masturbating, but she'd never felt anything like this. Having a cock inside her was the most thrilling thing to ever happen to the teenager.
"Your cock is rubbing my clit," she breathed.
"Yeah, do you think you're gonna come?"
"If you can do it long enough I will. Oh, God, Billy, I love fucking! Don't you?"
"Yeah, it's great." He pushed in very deeply, causing his balls to slap her asscheeks.
"How many times have you done it?" she said, her teeth chattering with excitement.
"I don't remember."
"Oooooooooh, I feel so filled up with your cock."
"Jesus, your pussy's grabbing my cock."
The pulsating bar of male meat inside her stretched her insides deliciously. Everything felt wet and tight and wonderful. She had never oozed so much juice from her cunny. His cock, big as it was, streaked in and out with ease.
"We're really fucking," she said.
"You better not tell," he said.
"I won't. Oh, God, Billy, keep doing that!"
"I don't know how long I can keep it up."
"I just love it."
"Me too."
They were both perspiring freely. His belly slapped hers and at one point she raised her legs and wrapped them around his back. Each time he thrust into her, she came that much closer to coming.
The little brunette had never felt so turned on. This was so much better than masturbating. Her body felt alive and tingling and urgently in need of release. Her orgasm was a hairsbreadth away and when it came she knew it would be intense.
"Fuck me, Billy," she moaned.
"Jesus, you drive me crazy when you say that."
His cock rammed into her. "Fuck me hard like that," she cried.
Her pussy gripped his prick and her words inflamed him. The fire in his groin became almost unbearable. Clenching his teeth, he held his breath in an attempt to delay his orgasm.
"A man is supposed to satisfy a woman first," his father had said to his sons when they began developing sexually. "A real man never comes until the woman is ready. Remember that, boys, and you'll be okay."
Billy remembered his father's words now. "I'm ready, are you?" he said to his sister.
"Yeah, almost," she said. "God, you're in so deep."
"Tight snatch!" he muttered, pounding her cunt with every ounce of his strength. "Such a tight snatch!"
He forgot his father's teachings as the fire in his loins erupted. "Gonna tear you apart," he rasped.
"No!" she shrieked. "Don't hurt me!"
He stopped thrusting. "Jesus, I'm sorry, Sis! Should take it out?"
She tightened the grip of her legs on his back. "No. Fuck me hard again. I'm going to come soon."
She tossed her head from side to side as the glory of her orgasm surged through her. Billy groaned, gazing down and watching her ecstatic face.
"I'm coming, Sis!" he cried, stabbing his erupting prick into her spasming cunt.
The girl cried out when the first spurt of jism exploded inside her. His cock streaked in and out of her, drenching her and bringing her off again. At the end he thrust more slowly, shivering and shaking as his orgasm abated.
They lay together on the bare tile floor. Somewhere along the way the bath mat had become wadded up. Penny's skirt was bunched up around her waist and her blouse was open. Her tits were out, heaving up and down as she struggled for breath.
Billy's weight was heavy on her, but she wanted him to stay inside her. Even though his prick was limp it still felt good to the horny teenager.
Penny was the first to recover her breath. She hugged her brother to her breast. "Can we do it again?" she said.
He lifted his head, groaned and dropped his face down to her tits. "Jesus, Sis, a guy can't do it again right away. A guy's got to rest before his cock gets hard."
"Is there anything I can do to help?"
Billy raised his head and grinned. "Jesus, Sis, you're too much."
Dropping down, he nuzzled her tits with his lips. She felt his cock stir inside her and hugged him.
"Well, I guess I'm not a virgin any more," she trilled.
He sucked her nipple into his mouth. Me either, he thought. Jesus, we're neither of us cherries any more.