Thin Walls

Disclaimer: This story is a work of fiction. It contains adult content and is intended for mature readers. This material is the copyrighted intellectual property of the author. Feedback is welcome.

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Eddie grunted as his sister Kate leaned her body against his.

"That's it," he said, his voice barely audible with the physical effort they were both exerting. "Keep going, keep going."

Kate seemed to gasp for air, her cheeks flushing with sweat, as she answered, "Yeah, almost there, don't stop now."

"That's it, don't stop, almost there," Eddie repeated, his chest heaving, using every ounce of strength he had to keep going.

Finally, they reached their destination and dropped their heavy load on the bed frame of Eddie's new studio apartment. Their task done, brother and sister collapsed on the bare mattress they had just lugged up five flights of stairs, exhausted.

"You owe me big time," Kate managed to say, still trying to catch her breath. "This mattress seemed to get heavier with every step we took. Remind me again why I agreed to help you move?"

"Because I helped you move eight times over the last four years."

"Aw, that doesn't count! You were just giving me a ride to my dormitory and then back home again. I only had a few boxes, my suitcase, and my laptop. This is different. Dragging this billion pound mattress up a gazillion flights of stairs is completely different! You owe me."

Eddie couldn't help laughing. He got up, even though the muscles in his body protested. "Okay, you're right. You're an angel and a saint for helping your big brother in his hour of need. Satisfied?"

"That's better." Kate smiled and stretched. "This apartment actually looks smaller than my dorm. I liked your last place better."

"Don't rub it in," he said as he reached for the cooler a few feet away. "Want some water?"

"No thanks." She got up and started looking around the tiny space of Eddie's new home. "Got beer?"

"Beer?" Eddie almost laughed again. He kept forgetting his little sister was now a senior in college and not the little brat from high school who had begged him to help her get a fake ID card so she wouldn't have to bug him to buy alcohol for her and her friends every time they wanted to party. "No. Just water. I haven't stocked up yet."

"You'll have to treat me to some drinks later then. You know, for helping you out in your hour of need, as you put it."

"Fair enough. You're a life saver."

And Eddie meant it. Kate had really come through for him when he needed help most. He'd caught Anton, his room mate and so-called best friend, banging Eddie's girlfriend, Sherry -- in his own bed, no less! The fuckers had tried to explain, but their lame excuses only seemed to make things worse. It was kind of hard to listen to his best bud and his lady both stammering that it was all an innocent mistake with his dick still in her pussy.

Eddie hadn't spoken to them since. He had just packed his few possessions in silence and moved out.

This new apartment was definitely a step down for him, but at least he was on his own, and that's what he needed after the ultimate betrayal he'd experienced. He had found out that his other alleged friends had all known about the affair between Anton and Sherry, which had apparently been going on behind Eddie's back for a whole year.

In the span of a few weeks, Eddie's whole life had been turned upside down. He'd lost his soul-mate Sherry, his best friend Anton, most of his good friends and acquaintances, the home in which he'd lived for the past six years, and maybe even his job. He'd been so distraught that he hadn't been able to go to work since the whole drama took place.

Managing to find this little studio apartment in record time thanks to a recommendation by his mom's gardener, he'd grabbed it right away. Even though it was a dump, he didn't care. A new start was just what he needed -- some time on his own to heal all those knife wounds in his back.

Eddie had been living here since he got the keys, sleeping on the bare wood floor, feeling sorry for himself. Feeling abandoned by his friends, he had brought over by himself the few things he owned, bit by bit. It was a pain in the ass carrying the boxes, the small cabinets, and the tiny television set up the building's narrow staircase all by himself, but he did it. There was no one else he could ask for help. It seemed like everyone he knew had turned out to be traitors of his trust, and he vowed he would never speak to any of them again. His dad had a bad back, and any other guy who might have been able to pitch in was either busy or suddenly unreachable.

For a brief time he thought he'd be able to finish the move on his own, but that damn mattress was impossible to handle by one person. Luckily for him, his sister Kate volunteered to lend a hand.

She'd been there for him in more ways than one since that disastrous day when he caught Sherry and Anton in a naked tangle on his best bed sheets. Kate had given him a shoulder to cry on when he told her what had happened. She'd let him crash for the first two nights on the sofa in her dorm suite until he found his new place, since he just couldn't bring himself to move back in with his parents.

Kate had lent him the deposit for his new apartment. He was stupid enough to have a joint bank account with Sherry, and all his finances were now a mess. It had proven to be quite tough trying to separate his money from hers while refusing to see or speak to her.

And now Kate had helped him out again, shoving this second-hand, filthy, full-sized mattress up five stories when no one else would. He looked at his sister now with genuine affection, amazed at how much she'd matured in the last few years. She was wiser and more grounded than many people Eddie's own age.

She had also matured physically since she'd entered college, and Eddie felt a tang of guilt as his eyes gazed at how Kate's tight shorts hugged her slender hips and ass, and how her tee-shirt perfectly clung to the hills and valleys of her round breasts and flat stomach.

He shook his head in embarrassment and grabbed a water bottle from the cooler. He felt like a pig for ogling his own sister. The trauma of his recent breakup must have warped his mind worse than he originally thought.

"Nice view," Kate said, sarcastically. For a moment, Eddie thought he'd been busted staring at his sister's sexy body. But he quickly realized that she was looking out of the apartment's small window and referring to the brick wall of the adjacent building.

"Thanks, smartass. I know this place stinks, but it's only temporary until I get my act together. Everything's happened pretty quickly, I haven't had a chance to be picky about where I live."

Kate turned around and faced Eddie with a genuine look of sorrow.

"I know," she said. "I'm sorry. I'm just busting your balls. I know how hard it's been for you the last few weeks."

"No problem. I wasn't exaggerating before. You really have been a life saver during all this nonsense."

"What are little sisters for?" she asked, and gave Eddie a hard hug.

He squeezed back, enjoying the feel of her body against his, the smell of the perfume on her neck.

She pulled away quickly and looked around the studio again. "But this place really is a shit-hole, Eddie. You could do a lot better. It doesn't even have air conditioning or a refrigerator!"

"I know. I'll get a fan and a lot of ice for my water cooler."

"And this old thing!" Kate jumped on the old, hellish mattress again. "I don't even want to know where it's been."

"Good, because I'm not telling you where I bought it. I'm sure you'll understand why I couldn't sleep in my old mattress anymore."

Eddie tried to get the vision out of his head of Anton and Sherry humping each other like dogs in heat on his old bed, but it seemed to be forever scarred into his mind.

"The springs on this bed suck," Kate said as she rocked on the mattress. It creaked and groaned as if alive.

"You think that's bad, you should hear the one next door."

"The one next door?" Kate's eyes widened in shock. "You can hear the bed creaking in the next apartment?"

"Yeah, the walls are pretty thin. And the girl next door is pretty hot. She gets laid every night. I hear the whole thing. I suppose it's one of the fringe benefits I get for living here."

"You're kidding, right?"

Eddie laughed at what his pathetic life had become. "No, I'm serious. She goes at it for hours and I hear every last detail. I just close my eyes, lay back, and enjoy it." And he certainly did enjoy it, but he wasn't about to elaborate on his sexually frustrated masturbation habits to his little sister.

"That's hilarious!" Kate laughed out loud and then leaned her ear up against the wall. "Can she hear us talk?"

"She can probably hear exactly what I hear. When's she's talking, I hear a jumble of chatter but can't really make out the words. But when she's screwing a different guy every night she gets pretty loud and I can hear everything crystal clear. And I know it's a different guy every night because I can hear her yelling out their names as if she were doing the deed right next to me. Different name every night!"

"That's great! You don't even need porn, you have your own live entertainment right next door!" She giggled like a schoolgirl and then said, "Is she really hot?"

"Smoking hot. She must be a struggling actress or something. Who knows?"

"You'll have to be careful whenever you have a girl over, if your neighbor can hear everything you do too."

"I don't think I'll have to worry about that for a while."

Kate suddenly had a mischievous look on her face, the kind of look she used to get as a kid right before performing a big prank on someone. She lay down on the bed and starting banging her hips on it over and over again.

"What are you doing?" Eddie asked.

"Shush." She kept gyrating on the bed, causing dust to fly off the ancient mattress. The old bed frame twanged with each of Kate's movements. Eventually, she faced the wall and started shouting, "Ohh, yes, Eddie, that's it, fuck me hard, Eddie, yes, yes, ohh, yes, fuck me, baby!"

Eddie blushed and nearly jumped out of his skin. "What the hell???"

Kate began laughing louder than before as she kept moving on the bed, as if having sex with an invisible man, causing the bed to make those familiar noises that so many people have come to associate with the throes of passion.

"Hey, knock it off," Eddie whispered, "She can probably hear that."

Kate finally stopped simulating the motions of sex and said, "That's the point, silly. You don't want the hot girl next door to think you're a loser who never gets any action, do you?"

"But you're my little sister. That's gross."

"She doesn't know that, dummy."

Kate grabbed Eddie by the hand and pulled him down to the bed. Like a limber gymnast, she twirled her body around and straddled him. In a mere few seconds, she had him pinned to the mattress below her.

"Now play along," she whispered. "I bet we can get you in her pants in no time if we make her think you're a super stud."

"This is ridiculous," Eddie said, trying to squirm back to his feet, but Kate's hold on him was too strong.

"Don't be a sour-puss spoil-sport," she said and began bouncing on his crotch. She then shouted to be heard above the creaking bed, "Yeah! Yeah, that's it! Stick that big dick in my cunt! Oh, Eddie, that's it! Fuck me hard, baby, fuck me good and hard!"

Eddie almost laughed again at Kate's corny attempt at dirty talk. He chortled, "Where'd you learn to talk like that? Some amateur sex flick on the Internet?"

"Come on, Eddie," she whispered, "Just make some noise and get your sexpot neighbor all wet and horny for you."

Kate reached down and wrapped her arms around Eddie, holding him tight like a cocoon. She kept thrusting her body against his, causing the bed's headboard to slam repeatedly against the wall. "Slam your cock in me, Eddie!" she screamed. "Oh, God! It feels so good! Fuck me, baby, fuck me."

She started moaning and panting, and Eddie had to admit it sounded pretty real. He imagined having sex with Sherry when things were good, and then he started imagining Kate having real sex with some college frat boy.

"Don't just sit there like a dead blow-up doll," Kate whispered in his ear. "Get into it and say something. You want me to do all the work?"

"Oh-baby-yeah-do-it-to-me-yeah-shake-that-ass-baby-yeah," Eddie uttered in a monotone voice that cracked like a little boy hitting puberty.

Kate smiled and kissed his cheek. "You're so cute," she said in a soft voice. "But that was pretty weak. Come on, let's put on a good show for your neighbor. You'll thank me later."

She leaned up, placed her hands on his chest, and started pumping her hips like she was riding a bronco. "Ohh, God, Eddie! That's so fucking good! You're gonna make me come any minute! Ohh, baby, keep fucking me like that! Uhhh, uhhhh, uhhhh!"

Despite his better judgment, Eddie grabbed his sister's thighs with both hands and started lifting his pelvis to match her rhythm. Even though they were both fully clothed, he could feel his dick getting hard.

"Like this, baby? You like it when I fuck you like this?"

He was rubbing his crotch against hers, up and down, faster and faster, trying to keep up with her. The bed was making so much noise he thought it would collapse at any moment.

His hands moved to her ass and he started moving her against him even more.

"That's it, Eddie! Fuck me! Just like that! I love you, Eddie! Oh, God, oh, fuck! Yeah! Yeah! Fuck me, Eddie, fuck me! Fuck me long and hard and don't stop!"

Kate was grunting and moaning and going crazy. It was driving Eddie wild, and he couldn't help himself. He pulled her body towards his again and held her tight, sliding his bulging hard-on against her. He couldn't even think about whether he was going too far. It felt too good.

"Oh, Kate, oh, shit, don't stop! This feels so good. Fuck! Fuck! Mmmm, yeah, baby, fuck me, fuck me, baby, oh, my sweet little Kate, ohh, ohhh!"

Whether or not Kate was still acting or getting into it too, Eddie couldn't tell. And he was too far gone to really think about it or care. All he knew was that she was bumping bellies with him and it felt so, so good.

He heard her scream his name and say, "Oh, I want it so bad! Don't stop! Fuck me harder! Harder, Eddie! Stick that monster in me deeper and make me cum! Don't stop! Yeah! Oh, this feels so fucking good!"

More moaning and pumping and screaming, and it just kept going, until finally Eddie completely lost it and he felt himself explode in ecstasy. He felt the semen soaking his pants, and he became still. It was like a drunk man becoming suddenly sober.

"Oh, shit," he whispered. "Oh, shit."

He stopped moving, and so did Kate. They just held each other, as still as statues, breathing heavily in each others arms.

Eddie kept whispering "oh shit" repeatedly, unable to say anything else.

Finally, he heard Kate whisper back, "It's okay. No harm done. That was fun."

She rolled over and, still trying to catch her breath, she whispered, "I think I'll have that water now."

Eddie jumped out of bed, got her a new bottle of water from the cooler, and went to the bathroom to cleanup.

When he returned, his face red with embarrassment, Kate was sitting on the bad, smiling.

"Your neighbor is definitely going to be interested in you now," she said. "I'd better get going."

"Listen, Kate," he muttered, trying to find the right words to say.

But she just got up and kissed him gently, and said, "Hey, shut up, okay. You had a rough few weeks. You need to have a little harmless fun once in a while. When your hot next door neighbor fucks your brains out, think of me."

Eddie still didn't know what to say. Kate laughed, grabbed his hand, and headed toward the door.

"Come on, Mr. Bashful," she said. "Time to drive me back to the university."

They walked out into the hallway, and as Eddie was locking the door, a tall, beautiful woman walked up the stairs and headed right for the door on his right.

"Hey, neighbor," she said as she reached for the keys in her purse. "How's it going?"

"Uh, hi."

Kate started chuckling, realizing that the hot neighbor Eddie had mentioned hadn't been home to hear their little performance.

"Coming or going?" the neighbor asked, seeing Eddie frozen with his key in the lock.

"Um, I, uh..."

"Coming," Kate answered for him. "Definitely coming." She chuckled again.

"This is my, um," Eddie kept stuttering as he tried to introduce his sister to his stunningly beautiful neighbor.

"We just met," Kate interrupted with a smile. "We met at the bar down the block."

The neighbor looked at Kate and then back at Eddie and smiled, "Well, have fun, you two. See you around, Eddie. My name is Amber. Don't be a stranger." And she entered her apartment, closing the door behind her.

Eddie still stood motionless. Kate started laughing again and reached to grab his key, opening the door, and dragging her brother back inside.

"Come on, big brother," she whispered. "You heard her. Let's go have some fun."