A Thong on the End of the World

"Hon, your makeup is running." Bridget said, pulling back before her shirt got stained.

"Ha, oh I'm sorry, I'm just, you know... this has been going on so long. It' like a weight's been lifted." Tina said, trying to stop crying.

Kevin smiled happily, watching these two sisters finally make their peace.

"Go clean up." Bridget told her sister. "Put yourself together. You want to look your best for the end."

Tina nodded and walked away, going to the bathroom to pull herself together.

As soon as she was gone, Bridget turned to look at Kevin. She smiled brightly at her brother-in-law and moved to the couch.

"Come sit next to me." she suggested, patting the cushion next to her. Eager to drop his negative feelings about his sister-in-law, Kevin didn't pause, sitting next to his sister-in-law. Kevin smiled at Bridget as she blinked rapidly, clearing away the tears. She looked at Kevin and her expression seemed to change. Her loving, sisterly, almost embarrassed-to-be-seen-crying smile look transformed into an almost wicked smile. He grabbed his wine glass and took a sip.

"So, Kevin..." she began, "I think Tina will be gone a few minutes so... you wanna fuck?"

Kevin choked on his drink. He began to cough as his sister-in-law smiled evilly.

"Is this a joke?" Kevin sputtered.

"No joke, baby. I am completely serious." Bridget said, her tears vanishing. Kevin processed everything.

"Is this all a fucking act or something?" Kevin said, whispering harshly.

"Of course! You think these are real tears? All naughty girls know how to cry to get their way." she stated. "My little sister is a fucking moron, Kevin. Even at the end of the world, some things don't change. Tina is a loser, she has always been a loser, and she always will be a loser. She is the type of girl who will always come up short."

"What the fuck are you talking about? Why are you doing this? Why are you even here?" Kevin asked.

"I intend to go out the same way I lived: moaning my head off, cumming like crazy, with a big fat cock in my cunt!" Bridget said.

"What?" Kevin asked, putting his head in his hands. "What the fuck?"

"I never got the chance to fuck any of my sister's boyfriends. I so wanted to, but like I said, she always dated such losers. You're the first hunk she ever dated. And you are a hunk! I know I've always been kind of a huge bitch to you, but don't think for one moment I didn't notice that fat cock you have packed away in your pants the first time I met you. I know you fucking hate me right now, but know this: in my experience, hate-fucking is about as good as it gets." Bridget purred, reaching over to touch his arm.

"No!" he said, pulling away.

"Oh, c'mon, Kevin. I wore my tiniest thong today, just for you." Bridget said. "And don't you want to finally see my huge tits!" she said, cupping them through her blouse. "C'mon, you can see them right now if you just give the word."

"No!" Kevin repeated. "You need to leave now!"

"Really? You want to kick me out of the house just after me and your wife made a huge breakthrough? You want to ruin your wife's good mood, or is it that you're afraid you can't resist me?" his busty sister-in-law asked.

"Fuck you!" Kevin exclaimed. Both heard the bathroom door open and Tina's footsteps approaching.

"Listen, it's not gonna happen? Okay? The only reason I'm not gonna throw you out of this house is because of Tina, okay? I don't want to fuck you! I don't want you at all! So don't bother trying, don't make a move, don't do anything over the line. Let's just go to the end in peace. Got it!? No funny stuff."

"Of course, hon. But just think about what you're missing out on." Bridget purred, unbuttoning her blouse, showing off more of her cavernous, juicy cleavage.

"I'll think I'll be alright." Kevin spat out.

**********

(One Hour Later)

"Oh fuck, I love your tits!" Kevin grunted, scrubbing his face between his sister-in-law's massive, sweaty breasts, before cupping her huge jugs and taking her rock hard nipple into his mouth.

"I know, baby, I know." Bridget purred, patting his head as he sucked at her giant breast. "Look at us, sis. Look at how much your hubby loves me now!"

***********

(One Hour Earlier)

"Hey guys, sorry about that." Tina called out sheepishly as she re-entered the living room.

"Oh, no problem sis." Bridget replied, standing up, greeting her sister perkily as she entered. Kevin looked a bit nervous, but he didn't say anything. "I'll tell you what, guys, let's pour some wine and talk a bit before the end. We've only got a little over an hour left, so let's just relax and chat." she suggested.

"Sounds good." Tina said brightly, grabbing the wine and filling up three glasses. Kevin didn't have the heart to tell his wife what Bridget had just done.

Minutes later, all three were on the couch, Bridget between the couple. Kevin was kinda silent as Bridget and Tina caught up. Bridget bent towards her sister as they talked, and as she did, her shirt pulled up, revealing her tiny thong pulled up over the hem of her pants, the tiny strings resting on her prominent hips, truly showing off her tiny, slutty underwear.

"So guys..." Bridget called out, putting a hand on each of their knees, "Before the end, we should say the one thing we wished we had done but weren't able to."

"I don't know." Kevin said, knowing this could be a dangerous question.

"Oh c'mon, it'll be fun." Bridget chirped.

"Yeah, okay." Tina said, eager to go along with her older sister.

"So, what's yours?" Bridget asked her sister.

"Uh, well, I never got to go skydiving. I wanted to go in the last month or so, but, you know, all the businesses kinda crumbled." Tina said.

"Kev?" Bridget asked.

"Uhh, well... I always wanted to go to Europe. Just go hiking through the mountains, embracing new cultures. Stuff like that." Kevin replied.

"How bout you?" Tina asked.

"Anal." Bridget responded quickly. Both Kevin and Tina choked on their drinks. "Definitely anal."

"Bridget!" said a shocked Tina.

"What? Hey, I've done just about everything I wanted to. But I never found a guy man enough to fuck my ass! That's not so bad, is it?" Bridget asked, unaffected by the couple's shock. "Oh, c'mon guys! We're all adults here. We can talk about sex. We're all mature." she paused. Both Kevin and Tina sipped their wine, eager to not say anything as this awkward pause enveloped them.

"Oh, c'mon." Bridget asked, setting her wine on the table, standing up, and bending over in front of the married couple. "Look at this ass! It's perfect! Tell me, Kevin, if my sister had a butt like mine, would you fuck it?"

"Bridget!" Kevin warned.

"Sis, this is getting a bit, uh, much." Tina said, trying to escape this awkwardness.

"Just give me an honest answer, Kevin. C'mon, we're family! Here..." She paused. Before either could react, Bridget reached down and pulled down her pants below her butt, exposing her thong-clad ass to her little sister and her husband.

"Jesus Christ!" Tina called out in shock.

"Jesus!" Kevin said, in a very different tone.

Despite his dislike of her, Kevin couldn't help but notice Bridget's out-of-this-world ass. It was simply incredible. Each cheek was ripe and juicy and firm with muscle, and the tiny thong threaded between the cheeks, disappearing between them, practically leaving her ass bared.

"Pull up your pants, sis!" Tina cried out.

"I will. But I want Kevin to answer my question. Would you fuck this butt?" Bridget asked.

"Uh, no! Of course not! I'm not into butt stuff. I respect any girl too much to push her into that." Kevin replied.

"But would you do it if offered?" Bridget asked.

"NO! Now pull your pants up!" Kevin said, "I'm not into anal!"

************

(One Hour Later)

"FUCK MY ASS, KEVIN! FUCK MY ASS!" Bridget screamed.

Kevin drove into her ass, kneeling behind her as she bent over on all fours, forcing his thick ten-incher up her stupidly tight asshole.

"Oh my God, this is incredible! I love fucking your fucking ass!" Kevin grunted.

Bridget smiled smugly.

"You hear that, sis! He loves fucking your hot older sister's asshole!"

*************

(One Hour Earlier)

"Sorry guys." Bridget said, pulling up her pants, sitting back down, a naughty glint in her eye.

"What are you doing, Bridget?" Tina asked, sensing something was up.

"Bridget, you should go." Kevin said, seeing Bridget was not afraid to step things up, even in front of her own sister.

"No, I don't think I'll be going anywhere." Bridget said, setting down her wine glass. Bridget stood up and stepped in front of the happy couple, both of them looking confused. "I have a confession to make, sis."

Moving quickly, Bridget grabbed the seam in her designer blouse and ripped it apart, sending buttons flying, exposing her massive, firm, enormous, braless breasts to her little sister and her brother-in-law.

"Holy Shit!" Tina called out.

"What the fuck!" Kevin cried, his eyes open wide, despite his better feelings.

They were soooo big! They were like watermelons on her chest. Just perfectly tanned, silky skin, lusciously soft and smooth, round and perky, incredibly firm, with hard nipples and perfectly circular areolas. They sat out like a shelf on her chest from between the sides of her torn open blouse. And most importantly, they were just fucking huge.

"Tina, I have a confession. I'm gonna fuck your husband tonight. He's gonna spend this last hour in bed, with me!" Bridget moaned out, pinching her own nipples.

"What the fuck are you doing, sis?" Tina cried out, her eyes welling.

"Cut the crap, sis. You actually believed that BS I was telling you? You really are that dumb, aren't you?" Bridget said, letting the blouse slip from her shoulders, then unbuttoning her pants and letting them fall to her feet.

Her long, golden legs were exposed to the couple, the flesh firm and taut and ridiculously sexy. The only thing covering her was her teeny, tiny thong, which barely covered her sweet cunt.

"That's it!" Tina cried out, standing up. "You're just an evil fucking bitch! You'll never change! God, I wanted to believe you, but I should have known better. You're a bitch, and you'll always be a bitch!" Kevin stood up as his wife stepped towards her barely clad older sister.

"Be nice, sis." Bridget pouted with an evil smile. She backed towards the sliding glass door leading towards the back porch. "If you want me out of the house, then do it yourself, sis. If you want to stand up to me, get the job done. Finally, here at the end, prove that you are better than me." Bridget dared.

Tina's anger boiled over. For years, her sister had made her feel like crap, made fun of her, and ran her down. Now, it is time to get revenge. To shut up her sister once and for all.

Holding her hands out, fingers extended like claws, she jumped at her older sister. Moving like a dancer, Bridget slid to the slide, pulling the glass door with her. Tina fell through the open door, tripping over the bottom rail, falling outside onto the porch clumsily, falling onto her side. She winced a bit, but looked back at her smug, nearly nude sister. Bridget leaned down and slid off her thong, leaving herself nude. As Tina got to her feet and moved to get at her sister, Bridget shot her thong like a slingshot at her sister's face before sliding the door shut and locking it, forcing Tina to bang her nose on the door. Tina stepped back, dazed, looking through the glass door as her sister stood triumphant.

"WHAT THE FUCK!" Kevin screamed, approaching Bridget angrily. Bridget spun and blocked the door with her body. He stopped when she posed against the door, exposing her suddenly nude form. In his anger, he didn't notice her bare, gorgeous pussy, dripping with want.

"GET OUT OF THE WAY!" Kevin yelled.

"To get to her, you'll have to get through me." Bridget purred, her ass pressing against the cool glass as she rested her foot on the glass, posing for the married man. Tina slammed her fist on the glass.

"Let me in!" Tina said, her voice muffled. Kevin didn't want to touch this evil slut, but he wanted to get her out of the way. Then, an obvious idea came to him.

"Tina! Go around!" he called out, telling her to go to the front door. She nodded and obeyed as Kevin walked towards the front, smiling at the evil slut, in apparent victory.

Kevin turned his back to her, and he got within feet of the door when he heard footsteps behind him. Bridget jumped on his back, wrapping her arm around his neck.

"Hnggnh!" Kevin grunted as he was choked. Kevin stumbled to the side, trying to detangle himself from the crazed slut on his shoulders. Reaching up, he tried to pull her hands apart. After a bit of struggle, he succeeded, pulling her arms apart and spinning around, trying to toss her away. As he did, she grabbed his wrists, not letting him get away. He pushed her away, but her grip pulled him with her.

Bridget's back hit the wall. She was gasping hotly, her eyes looking crazed, hair looking wild with exertion. She was gasping as she looked at her hot brother-in-law. A smile crossed her lips, confusing Kevin. Then he realized why. He didn't realize that at the same moment Bridget's back hit the wall, Kevin's hands landed on her tits.

"They're nice, aren't they?" Bridget gasped as she felt her brother-in-law's manly hands against her smooth, soft flesh. Kevin looked down to see his hands pressed into her smooth, doughy flesh, her round tits pressing between his fingers, her nipples against his palms. He was in shock, not knowing how his hands ended up there, but for some reason not able to pull back.

"Hey, Kevin! The door's locked!" Tina said, slamming on the front door.

Bridget reached up and pressed her hands against Kevin's, forcing him to reluctantly squeeze her huge breasts, really forcing him to dig in and feel them.

"Do you like them?" Bridget whispered, his strong fingers feeling her lightly slick with sweat breasts. Kevin couldn't reply.

"They are just soooo big, aren't they?" Bridget whispered. Kevin was getting lost. He hated this evil woman. Hated her. But here he was, molesting her massive boobs, as she looked on hotly, and he couldn't say a word.

"Just keep squeezing them. Lose yourself in them." Bridget whispered.

"HEY! Kevin! Where are you? Are you okay?" Tina called through the door.

"Looking at my sister, I think there are a lot of things you never got to experience in life. Naughty things." Bridget purred. Kevin couldn't pull his hands away as his hands kept kneading her massive EE cups.

"Don't you want to fuck a real woman?" she asked.

Squeeze.

"Don't you wish you could do anything you want to a pair of huge tits like mine?"

Squeeze.

"Don't you want a whore like me to suck your cock?"

Squeeze.

"Don't you want to feel one of those tight, extra-squeezy pussies all your friends talk about?"

Squeeze.

"Don't you want to fuck a girl up the ass? Just fuck the hell out of her?"

Squeeze.

"Don't you want to spend your last hour in bed, making a bitch like me moan?"

Squeeze.

"Don't you want to have your final act be knocking up your hot sister-in-law?"

Squeeze.

"Hey! What's going on!" Tina called out. "I'm gonna run back around."

"You'd better decide fast, Kevin. You could have this body, right now. What does it matter? We're all dead anyway. Just be selfish and have some nasty fun before you go. You could either cuddle with your wife, or fuck the shit out of your wife's hot older sister. What do you want to do?" Bridget whispered.

She stepped forward, pressing her large breasts against his fit chest. She looked up at him, awaiting an answer.

Kevin was in shock. What the hell had just happened? Why was he squeezing Bridget's huge breasts? Why couldn't he stop himself? This was so wrong! He hated this evil woman! Hated her. She was a vile woman. But she admittedly was smoking hot, and her body was clearly affecting him. His cock felt rock hard in his pants.

Wait, this was ridiculous! This was the last hour before the apocalypse! He should spend it with his wife! His true love! Not banging some vile whore. His last act should be kissing his wife, not fucking a tight, slutty pussy. He should take in the stars and wonders of the planet, not a pair of huge juicy tits. He was an artful, creative, articulate young man. Not a slut-banging prick. Hot bodies didn't matter to him. He liked cute girls. He didn't need a girl with gorgeous looks. Plump, kissable lips. Gorgeous tan skin. Giant, soft, perky, amazing breasts. A juicy, fuckable ass, ready to take a hard fucking. He didn't need to fuck one of those super-tight cunts.

No! He loved his wife! This was madness. He was a good guy! What kind of guy would betray his wife at the last minute just to bang some slut? What kind of husband would use the end of the world as an excuse to cheat on his wife?

He loved his wife. She was so cute and funny and lovable and smart. The only thing her older sister had was huge tits, a juicy ass, long legs, a gorgeous face, perfect dick-sucking lips, sexy hair, and the mind of a filthy whore.

Kevin looked down at his evil sister-in-law and her hot body. She smiled evilly. He thought of his wife, and all the great moments she had given to him. What meant more to him, his lovely, beautiful wife, or the way these massive, soft, suckable, fuckable tits felt?

The choice should be obvious.

***********

(Ten Minutes Later)

"What the fuck is going on? Tina said, cupping her hands, looking through the glass door, seeing no signs of life. "Where is he?" she wondered.

"Oh fuck!" Kevin said, finally pushing his thick cock into Bridget's tight cunt.

"That's it! That's fucking it!" Bridget moaned out. She was on her back, her legs eagerly spread as Kevin was hunched over her, forcing his thick cock into his sister-in-law, finally.

"Holy shit, you're tight!" Kevin grunted.

"Mmmm, I've been waiting years for this cock!" Bridget screamed out. She palmed one of his ass-cheeks and forced him forward, forcing all ten inches of his cock into her sweet, welcoming cunt.

"Oh my God! Holy Shit!" Kevin said as his cock bottomed out.

"Mmmm, is that pussy worth it baby? Is that worth betraying your wife for?" Bridget asked with a wicked smile.

"Holy fuck! Fuck yes!" Kevin replied, diving forward, his lips meeting hers, his hands traveling up her smooth skin to immerse himself in her voluminous rack.

************

(Ten Minutes Later)

Tina tried pulling open the front door, but it wasn't budging.

"Ow!" she said, her hands sore as she tried to rip the door open.

"Oh my God they are so soft!" Kevin screamed, reaching up, squeezing his sister-in-law's massive tits as she rode him.

"Your cock's so fucking fat!" Bridget moaned out. "I love it! It's so yummy!"

Bridget bounced roughly on Kevin, bruising his thighs as the whore viciously rode him.

"Oh God, Bridget, your pussy's so fucking tight!" Kevin called out, looking up at the voluptuous slut on top of him.

"FUCK! I always knew your cock would be big!" Bridget moaned out. "Squeeze my tits! Squeeze my huge fucking tits!"

Kevin squeezed them again. He couldn't get enough. They were just so big and soft! He pinched her nipples, making the bitch moan on top of him.

"This was so fucking worth it!" Bridget screamed, reveling in betraying her little sis. It made their years of disagreements, years of fighting, sibling rivalry, and jealous spats, so totally worth it. She had conquered her little sister's man. Stolen him at the last minute. The thought made her scream.

"FUCK YES!" Bridget screamed.

Her pussy tightened around Kevin's thick bare cock as she came.

"YESSSSSSSSSSSSSSSS!" Bridget squealed, her body jerking as she rode out her orgasm, her tight cunt squeezing her brother-in-law's pumping cock, trying to coax the cum out.