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Kiss My Ass Bi

Kiss My Ass Bi

by mvp6
19 min read
4.46 (8400 views)
adultfiction
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Kiss My Ass

I've seen this category of porn where dudes are having sex with their stepsister. I can't say I ever understood the appeal. I mean, those are actors. They are not in any way stepsisters or stepbrothers.

Well, I didn't get it until I had a stepsister. A stepsister is a hot babe living right there in your house. At any moment you might turn a corner only to see her bent over in front of the fridge, just pushin' her ass out there in too short shorts for you to see. Or maybe she's walking around in just a towel and you know her naked pussy is an accidental slip away from being on full display.

If she's like mine she likes to torment you. Amber (what a dumb name. You might as well intend for her to grow up to be a stripper) teases me relentlessly. She asks if I want the salt just so she can lean over and force me to see her cleavage. She hangs her sexiest lingerie in our joint bathroom. And I swear, at night she's masturbating on the other side of the wall, moaning just enough so I can barely hear it if I'm quiet.

Then after I'm frustrated all day, if I lose my cool, she'll make a smart ass comment. Just the other day she was on her phone, walking past me in the hallway, when she intentionally told her girlfriend about the blowjob she gave her boyfriend, Brad. She looked me right in the eyes and when she was certain I was listening she said, "and when he came I let just the tiniest trickle escape from the corner of my mouth to boost his ego." But, I'd heard her on the phone many times when she didn't know I could hear, and I knew for a fact that the prissy cunt would never take a dick in her prissy little mouth.

I just rolled my eyes, with an audible, "Ugh,"

Of course she called back over her shoulder, "You can kiss my ass, Pete."

A year ago that pissed me off to no end. But after hearing it for the umpteenth time and glancing at her ass for the umpteenth time I became obsessed with it - her ass. If it meant feeling her silky buttskin I would do it. Fuck the humiliation! To actually feel her warm naked butt with my lips... and I'd be able to get a really good look too. Not like when she's in her bikini or that one time I accidentally walked into the bathroom just as she got in the shower.

That phrase started to be a favorite of hers. I heard "Kiss my ass." at least once a day.

So I started returning the sass, "You wish." or "You should be so lucky." We had a constant verbal battle. The conniving manipulative wench was always on the offensive, except for that first month after she moved in when she allied with me to throw a party without our parents finding out. But that was then.

Finally one fateful day, when it sorta happened, something occurred to change it all. It was the day that set us on a path. She was wearing these ripped jean shorts which showed a two inch square of milky flesh right in the middle of one bouncy bun. That spot was one that had always been covered by underwear or swimsuits. And being able to see that patch of white told me that she wasn't wearing any panties under her shorts. To my eyes that previously hidden place was virgin skin.

She was on her way out the door in a low cut top with a push up bra and I couldn't help but gawk for a second too long. I bet she planned it. It would be just like her to plot and scheme to some devious end. She sneered, "Like what you see? Want a picture? It'll last longer."

"You go out in public like that? What does your boyfriend think?"

"He likes it. And you can kiss my ass."

"Does Brad kiss your ass? Is that what you like about the little pushover!"

"Noooo. He doesn't. But you would." Saying that she bent over showing that fine ass in those tight shorts with the ripped hole. "I dare you!"

I grabbed the belt loop on her pants, pulling her roughly to me. "Oh you're asking for it now. I'll do it! Don't you test me."

She just bent over more. So I did it. I closed the distance, coming another foot closer, and pressed my lips to that naked spot through the hole. Then I puckered, making a kissing sound as I lingered. It was hot and I shuddered. I swear she did too.

Releasing her I was ashamed of what I'd done. Afraid she would know how much it thrilled me. It was everything I'd hoped it would be, but degrading too. Embarrassed, I turned tail getting out of there quickly.

In the bathroom, glowing in the memory of her softer than soft skin, I looked at my lips in the mirror as I touched one finger to them. They were the same as always except some residue from her sexy skin must remain. A million tiny unseen molecules of my stepsister's sexy ass surely were on my lips. I didn't wash.

The next day she redoubled her efforts to abuse me. The taunting was too much. Surely she judged me. Even hiding in my room didn't help because when I ventured out for a snack there she was, waiting to pounce.

She wore a pair of pants I'd never seen before: stretchy and thin, they rose high on the sides and crept up her asscrack. They were almost thongs.

I took one look at her clearly visible cameltoe before she turned and bent over, pretending to fish whatever from a basket in the living room. "Shit! What are you doing, Amber? Cut it out!"

"You. Can. Kiss. My. Ass. Petey." She said it slowly with a wicked grin. And like it was permission rather than the usual aggression.

"Whip it out." I retorted.

"Oh, I'll let you kiss it. No, I'll make you kiss it. And I don't mean the clean area. You'll have to kiss the center like a good brown-noser."

"You know I'll do it. Just so you don't win."

She tapped her chin pensively, "Don't think I won't drop these shorts. Don't even think it!" She paused, "But you'll like it too much. If you ever wanna do it then you gotta suck Brad off first.

"Fuck yourself!"

A few weeks went by and suspiciously she didn't say the words once. If you can believe it, I missed the phrase. I missed teasing her and thinking about my lips on her skin and the possibility that some day I might actually kiss her fully bare ass. The power of two years of teasing was too much to bear. Given the chance, I felt that I really would kiss her dirty asshole if it meant I could delight myself with her bum completely. I might even suck off that pussy-whipped boyfriend of hers. I told myself it was just a dick. Probably small.

Then one day she was pushing my buttons continuously, being a real brat. I shot her a nasty look and she said it - but more. "Kiss my dirty hole."

The image was new and it took hold of my mind. Quietly and solemnly I gave a singular answer, "OK."

With her hands on her hips and a snotty attitude she challenged me, "You know you gotta suck Brad first."

I whispered sheepishly, "I'll do it."

Stunned, she fell back onto the couch. Then another evil smile appeared magically upon her face as she completely changed her tune, "It would really help me out. He's gonna stop taking me out if he doesn't get some."

In a moment we were conspiring together on a way to make it happen. We just needed a way to make it so Brad would go along with it. And as much as I begged, she insisted that the blowjob happen before the ass kissing.

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A few days later she pranced into my bedroom uninvited and dropped herself onto my bed seductively, "Still wanna eat my ass, dickwad?"

She didn't wait for an answer, "Brad thinks a girlfriend of mine is going to do the nasty deed for him. He doesn't know about our deal and it's gotta stay that way. But I told him she's never done it and wants to find out what it's all about."

"He'll notice it's not a girl."

I'm working that out. I just wanted to warn you, prepare you, that it's going to happen. It'll be a gloryhole or a sheet or something. This weekend or next." I didn't know exactly what she meant, but I knew if there were a way she would find it.

She was lying on her stomach now, lifting her ass up and wiggling it seductively. "Once it's set up you can't BACK out."

It dawned on me then that I couldn't trust her, "How do I know you won't gyp me? It's gotta be at the same time."

She jumped up in a huff, heading for the door. Then suddenly stopped, "OK, I can do it that way. But you're gonna swallow too." Of course she added more stipulations.

So I did too, "Then I get a piece of your ass for as long as I want."

"Natch, you can have as long as you can resist moving your lips from my ass to Brad's dick."

"Fuck you, Sis." But I smiled as I said it.

She closed the door behind her as she left me with these parting words, "Only your lips, Bro." This was perhaps the first time she'd closed a door without saying those more usual three words. And definitely the first time she'd called me bro. Was the ice breaking or was she just being a plotting cunt?

She sent me a text Thursday. Another first. "Better get your lips wet 'cause it's on tomorrow." I could barely wait to see her naked buns. I was so ready to squeeze and caress them. To move my lips all over and then kiss and lick everywhere. And the brown center - well, that seemed like more of a reward than a punishment. Brad's dick, on the other hand... I guess I would have to pay the piper.

She explained the plan that evening and fuck if it wasn't going to work. I dreamed of slathering her ass, even the dirty center. I wasn't so sure about following through on the rest. If I did I'd be a cocksucker. I could almost hear her making fun of me from that moment on. Daily I would hear, "Kiss my ass, cocksucker."

How would I answer, "Any time." or "Fuck off!"? But in my heart I knew what I would say: I'd tell her she loved it but if she wanted me to do it again she had to let me fuck her. She wasn't blood.

Friday arrived and I was as nervous as a turkey in November. She'd explained the plan fully and what I had to do. But what if it failed? What if he found out?

I waited in my room, eyes glued to my phone. Then the text came in. "Come now and don't make a sound."

Inching the door open and entering her room I was met by her comforter hanging from the ceiling over her bed. The lower half of her naked body was displayed prominently as it stuck out from beneath the edge of the suspended comforter. And what a body it was!!

She was laying face down on top of Brad who was face up. Her butt was more beautiful than I'd ever imagined. The enchanting visage wasn't even marred by the sight of his ruddy dickhead barely poking out from between her thighs.

I heard her announce me to Brad, "Here's Delilah. Just wait for it." As I crawled up on the bed she parted her legs, spreading Brad's and making way for me. His dick which had been trapped between her scissoring thighs sprang back and bounced on one amazing ass cheek.

I felt like her butt cheek belonged to me. His cock should never touch it. And it left a smear there too. The bastard!

Grabbing hold of his hard erection I pulled it away from her body. His was thicker than I'd figured. Thicker than mine. He groaned, "That's right, babe. You feel fantastic!"

I worried that Amber would assume I was already sucking it. That she would think I wanted to. To dispel any misperceptions I quickly pressed my lips to her bun - the same spot as before. But it was only delaying the moment when she would know I had a dick in my mouth.

I moved to the cheek I'd never touched before, sliding my lips gently across her smooth ass. Brad's cock grazed my neck causing him to hump against me. Circling her round firm derriere, the forgotten smear found me. I made an unpleasant face which nobody witnessed.

Brad leaked his disgusting cockcrap on my jawbone. Then asked, "What's going on? Is Delilah gay?"

I could tell that Amber had not anticipated the question as she faltered, "uh, um, yea. See what I do for you Brad? This is what she gets so that you get what you want." I was impressed by her quick thinking. And Brad totally bought it.

"That is so hot!" He said, "I wanna watch."

"No!" She spat out explosively. "Remember, you can't watch or talk to her."

"This is awful. Lesbian sex is happening right here and I can't even watch her lick your pussy." Then he asked me, "You're going to lick her pussy, right?"

I nodded my head which made my lips skim up and down on Amber's cheek as Brad's dick was pushed by my moving jaw. They both could feel my response. Amber stiffened a little since she was not expecting this turn of events. She shushed him but he went on anyway, "Do it now!"

She cut him off, "she's got a plan and we should stick to it." I shook my head no and again they could both feel it.

He didn't drop it, "Come on, Baby. Just let her and I'll take you to that concert you want to go to." She agreed, but said I needed to finish the original plan first.

I had no problem with the original plan and no problem with licking my stepsister's pussy after.

I grabbed her butt roughly with my free hand, kneading the firm flesh, enthralled by how it felt and moved under my touch. When I squeezed a certain way her butthole was exposed to my view. It wasn't brown as expected but deliciously pink. I had wondered if I would have reservations about licking a person's actual butthole but now that it was about to happen I had zero regrets.

I got real close so I could examine every detail. It was a radiating sun waiting for its unholy morning acolyte. It was clean and inviting. It winked at me when I blew a soft stream of air on it causing Amber to giggle.

"What's she doing, Amber?"

For a change Amber sounded dreamy, "As long as she wants, Brad. That was our deal."

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"Yea, but I can't see. What's she doing?"

Tenderly I pressed my lips to her sexy bunghole and kissed it audibly. Amber sighed, "She just kissed my ass. Finally." It didn't taste like anything so I kissed it again.

"What!? Why would anyone do that? Why would you want that! What about my blowjob?"

"Shut up, Brad! We're gonna do whatever we want and you're just here as a finishing touch."

"I'm gonna get my blowjob? Right? Cause I'm not taking you to New York if I don't get it."

"You're gonna get your fuckin' blowjob - unless I change my mind, so you better be patient." She lifted her hips high up so I would have better access to her nether hole. She was definitely liking this. I was liking it too. And Brad's dick throbbed once in my hand telling me that he liked her abusive ways.

Ambers anal ring was rubbery and tight and reacted to every touch of my tongue. I gave it long swipes and little dabs and swirling bathes. And it told me exactly how much she loved it.

Brad whined, "This is taking forever." So I squeezed his balls with just enough anger to shut him up. He yelped, but stopped complaining.

Amber crooned, "Oh, P...," she almost slipped and said my name. Recovering she continued, "Delilah. You're so sexy. Do it again."

Did she mean what I thought? Or was it the darting action with my tongue that she wanted?

I jabbed forcefully, wondering how much force would be needed to dilate that dank hole and push my tongue inside. She didn't react at all. So I wrapped my fist around Brad's balls again. I knew she could feel my fist on her thigh. And Brad's whole body grew tense - but he said nothing.

Gradually I increased the tightness of my grip, waiting to see how much he could take. Amber's breath grew ragged. Brad seemed to be holding his. And I was noticing the excitement in my own breathing too, as it washed over Amber's asshole in waves of inhalations and exhalations. Was I more excited to be breathing in the air that I sucked across her steamy puckered hole, or more excited to be giving the little twerp, Brad, what he deserved?

Viciously tonguing Amber's erotic sphincter, I simultaneously yanked his scrotum, pulling it down as hard as I dared. He grunted but didn't say a word. She had him trained well. I was glad, but jealous that she wasn't all mine. So I pulled his nuts more, enjoying the clammy feeling of them in my hand as much as I enjoyed tormenting Brad.

That's when Amber had her first orgasm. And there was no mistaking it. I'd heard many of her orgasms through the walls so the sound was nothing new to me. It was much better to be involved and so close.

Testing the situation I pulled back to watch from a distance. I twisted the sensitive orbs until he grunted again. Nothing from Amber. Then I licked her while doing it - bingo! What a twisted little bitch she was. But I allied myself with her, becoming a twisted little bitch myself.

Brad gave a particularly loud yelp but I hadn't been doing anything to him just then. Why became clear to me when he finally objected, "No! Please don't bite the nipples."

Together we tortured poor Brad giving her at least five orgasms and me the time of my life relishing in all the ass licking.

When she seemed too tired to continue I bent Brad's dick painfully out of the way and attacked sis's pussy with my mouth.

She squirmed frantically, "It's too sensitive. Stop." But I didn't. I tasted my sister's wet exhausted cunt for as long as I wanted before assaulting her clit. I thoroughly enjoyed how she tried to squirm away. I enjoyed it more when I found out that Brad was getting his revenge, holding her in place with his hands on her hips.

She had one more climax then slumped listlessly on top of Brad who offered this comment, "It's not so good when you're the one who can't stop it. Is it?"

She murmured a tiny reply, "It's awful. Horribly awfully good."

Then she turned her attention to me, "Delilah? Are you done serving my asshole?"

I was. I felt totally satisfied with how I had enjoyed her firm buns, tasted and licked her crinkle, and the wonderful finish had been eating her gash. I almost answered. I wanted to tell her how much I liked it. But I was not Pete, I was Delilah, and couldn't speak. So I carefully placed my lips on her asshole, gave it a loud puckering kiss, and nodded so she would feel my head nod.

But I'd completely forgotten what was next. My ill conceived promise.

"OK, then. Brad deserves his reward. Suck his cock, honey.

I lifted it up, with my eyes fearfully fixed on the thick moist beast. How could such a wimpy pushover have such a manly dick? Surely this was the only reason she was with him. Except that it had never been inside of her so what difference did it make?

I could back out. Just leave. But if I was ever to have a chance to lick Amber's ass again I would have to follow through. And I did want a piece of her ass again. I told myself it would be worth it despite my lingering doubt.

How was being an ass licker not worse than being a cocksucker? Except that it was a sexy girl's ass and a gross guy's cock. That's how. I'm not gay.

But as long as I didn't enjoy it I still wouldn't be gay. This was just about a bargain between me and my sis. Nothing more.

In an odd twist of fate the thought hit me that if Brad's cock touched her pink star it would be imbued with an essence that would make it better. Impulsively I rubbed his cockhead on her pink shitter. Brad moaned louder than I thought a person could. "Amber, it feels so fucking good! How did we never do this before?"

He left another smear, which considering where it was, looked pretty good - so I licked it up. "Yes! Delilah. Do it. Eat Brad's precum. Now suck it."

And it worked. His cockhead looked acceptable now that it had been rubbed on Amber's butthole.

Then I had an evil thought: blowjobs don't need to be sensual and pleasurable. They could be torture.

Turning my head sideways I placed my teeth on Brad's cockshaft. Gently I bit, though gradually increasing the bite force until Brad again tensed up.

Amber's body shifted as she lifted her head, "What are you doing? Delilah? Answer me! No wait. Brad, what's she doing?" He didn't say a word.

"Brad, you better tell me or else." Brad just kept moaning and grunting with mixed vocalizations of pain and pleasure.

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