Hump Day Threesome

by Mark Gander

Copyright© 2017 by Mark Gander

Incest Sex Story: What happens when you combine two step-siblings, a preachy, closeted gay boyfriend to the stepsister, and possible fourth member of their little party, in the form of a goody-two-shoes Mormon girl with a naughty past full of secrets? You get the last Hump Day in March, right on the cusp of April Fool's Day, and you get Warren Buck's new life.

Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa   Ma/Ma   Mult   Consensual   Gay   BiSexual   Cheating   Incest   Brother   Sister   Group Sex   Harem   Orgy   Polygamy/Polyamory   Anal Sex   Exhibitionism   Oral Sex   Voyeurism   Nudism   .

I felt the splash of cold water on my face as I opened my eyes, looking up from my bed at what appeared to be my stepsister, Maria. At just a few months past her eighteenth birthday, Sis, as I simply called her, was full of her usual impish, playful mischief. This was typical of Sis, because while she was serious about studies and always got straight As, showed considerable maturity in many ways, she was not above pranks, jokes, or anything else like that. That was especially true when those were directed at me. As always, when I showed any pique or disgust or irritation, she resorted to pouting and batting her lovely, dark brown eyes at me.

“Sis, really? What’s the meaning of this? It’s just a Wednesday morning, you know,” I reminded her.

“Yes, but you have today off, don’t you? And today is the first Wednesday after my graduation!” Maria reminded me that her high school days had just ended.

“I have today off, because I work Saturdays, of course. I don’t take Saturday off like the rest of the family. I’m a barber. Saturday’s my busiest day, but I need Wednesdays off to chill and take care of errands. You should understand that. Dad’s a barber, too, after all,” I pointed out to her, even as she planted hugs and kisses all over me.

“You’re wet, Bro! You’re a wet barber! But, guess what,” she leaned in to whisper, “I’m wet, too!”

“Oh, Sis, that’s not something that a brother should know, not even a stepbrother! Don’t you have a boyfriend or something for that kind of talk?” I shook my head.

“Oh, you mean the boyfriend that Mom and Dad fucking handpicked for me? Fuck him!” Sis sneered, not happy at all.

“No thanks! Wait, are we alone in the house?” I asked Sis.

“Yep, and I’ve already decided that on my summer jobs, I’ll try to have Wednesday off, too. Shouldn’t be hard to pull off! Who’s going to say no to a little chica like me?” Maria licked her lips as she ripped off my undershirt and pajama bottoms, “These clothes are wet and I don’t want you catching your death!”

“Catching my death? We’re in New Mexico, Sis! But I agree that you could charm the pitchfork from the hands of the Devil himself! You’re too cute for your own good!” I shook my head, especially once Maria removed her own top and bottoms, leaving her sultry brown skin against my pale flesh.

“Admit it! You like this! You like having a Mexican stepsister, because you’re attracted to Latinas, aren’t you? And when I walked around in my Catholic schoolgirl outfits, that was always a turn-on for you, wasn’t it? Good thing that Mom was always close friends with the Monsignor and could get me in for a few favors,” Sis told me as she started rubbing her body against mine and snuggling up with me under the covers.

“This isn’t going to help much, what with water all over the damn comforter!” I noted, but Sis shrugged.

“We can let it dry and it will be fine. Besides, what I have in mind will give us plenty of heat,” Sis announced as she planted her pussy just above my morning wood and sank down upon it.

“Sis ... oh, my God! You just ... mounted me!” I tried to think of a word to describe her impalement without making it sound as if she were actively fucking me yet ... yet.

“Yes, and brace yourself, Bro, because I’m about to hump you silly! Bareback, too! The only way to go!” Sis declared her intentions rather brazenly, “You’re my new boyfriend now.”

“But I have a girlfriend, you know!” I reminded my sister, dreading that confrontation, given that I was now cheating on Christine.

“That silly Mormon girl? I don’t care about what you do with her! You can fuck her or have her give you handjobs! You can marry her, she’s not a bad choice for an LDS chick, but let’s stop kidding ourselves. We’re lovers, you and me, and we’re meant to be lovers for life. I’m going to have babies with you, too. Oh, and I’m going to be a webcam girl, to help bring in plenty of cash to provide for the babies. Maybe you can do webcams with me ... lots of people like to watch more than just solo action, and if we blot out your face, we can just say that we’re stepsister and stepbrother fucking ... the cash flow would be out the door!

“Face it, you can still be a barber, but most of your income would then be from the webcams, and if you end up getting divorced, Christine won’t have a clue about your secret income source! You won’t get taken to the cleaners like many guys! I would never let that happen to my bro, my boyfriend!” Maria announced, much to my shock, even as she rode me furiously for several more minutes.

“So, you’re dumping that crazy Seventh-Day Adventist guy? The one with the constant literature about how Sunday worship is the Mark of the Beast?” I chuckled.

“Oh, him! What to do about him? I haven’t decided yet! How about we try to seduce or ‘corrupt’ them, Bro? Both of them, and whichever one, if not both, caves, gets to be intimate with us! If there’s any bi to Chase, and I wouldn’t be shocked if there were, I can bring it out of him! So can you, Kieran! You’re hot as hell and a real stud! I know my brother, you know! You could never be happy in the straight life, wife, 2.0 kids, going to Mass or Saturday morning service or whatever, doing the once or twice a week, nights out, missionary-style, ‘hump, pump, and dump, ‘ routine or whatever, could you?

“And Mormons, with their secret temple rites and magical underwear? Never gonna happen to you! You’d rather be dead than brainwashed like that!” Sis surprised me with her vehemence right then, “And guess what, so would I!”

“What makes you think that I’m bi, Sis?” I asked as I damn near came and my precum started leaking into her, while she began whimpering, her toes curled, and she flooded my dick with her juices.

“I know that you’re not gay, because you’re about to cum in my twat, aren’t you, and I know that you’re not straight, because you were checking out Chase’s bulge the last time he talked to you. You tuned out his words and stared at his crotch ... and his abs, I believe, too. Nice, not washboard, but not too flabby, either! I’d love to see his body shake as you plunged your cock inside his culo!” Sis told me, knowing that I would have to cum upon hearing that, and sure enough, I did.

“Damn, girlie, you caught onto my attraction as well as my annoyance with him, eh? And, damn it, we still have most of today ahead of us. All Wednesday long, Mom and Dad out of the house, and nothing to do but eat, fuck, and what else? I would say drink, but you’re not old enough in this state!” I teased her a bit about being barely legal.

“Yes, but I can raid your stash of weed and booze, can’t I? The one that you keep hidden, along with your porn? I hope that you find an apartment soon. I can be your roommate and no one would suspect a thing. Then I could drink and smoke weed without worrying about being caught. Hey, I’m a good girl, mostly, but even good girls have to be bad now and then, don’t we? I got straight As and still drank and used a bit of dope now and then,” Sis encouraged me.

“Well, if we can lure one or both of our significant others into a poly situation, then perhaps we can have enough income to afford an apartment more easily,” I suggested, making her grin.

“I love that idea. How about we start with Chase? By the way, it is Hump Day, so, whatever happens to the others, I’d like a new tradition where we always have Wednesday off together and hump most of the day away! It’s Hump Day, after all!” Sis said as she started licking my cock clean of her own juices.

“Oh, fuck, yes, Sis! I love your mouth, it’s very warm and wet on my dick!” I groaned as Sis bobbed up and down on my prick.

“I love how it tastes dipped in my juices, too, Bro! I wonder how it would taste with Christine’s juices added as well,” Sis winked at me, “Look, Bro, I’ve wanted you for the longest time. Period. I am yours and I’m not going anywhere without you. You’re papi. You’ve always been papi to me.”

“Very well, then. You want to call Chase over and see how he reacts to you having two papis?” I teased Sis, who shook her head.

“Yes to the call, but no to the second papi. There’s only one papi. I might date him, even marry him if he’s open-minded enough, but he’ll never be papi. That’s always you. That’s always going to be you. Don’t you ever doubt that! Anyway, after that, we should invite Christine over and see how she takes the news. I hope that she doesn’t dump you. I know that her doing so would hurt you a lot. Just know that I’ll hold your hand and comfort you as best I can through the whole thing. I’m with you. I’m on your side. Always. Absolutely loyal to you. You’re my man! You’re papi! I just want us to live openly together! No secrets. No lies, right?” Sis urged me, wrapping herself around me.

“No more secrets. No lies. No cheating. And that means telling Mom and Dad about us, too, whatever the consequences,” I announced.

“Yes, whatever it takes. We’ll be us. You and me, hopefully Chase and Christine as well. But whatever happens, I love you. How many times did you babysit me without complaint? Not many brothers would do that, trust me. I trust you and love you in ways that few women can truly love and trust a man, believe me, beyond what love Christine has for you, though I don’t doubt that she adores you. Why wouldn’t she?” Sis agreed as she dialed Chase’s number at last, ready for the moment of truth.

“Um, Chase, it’s me, Maria. Something has come up. I hope that you can ... handle it, but we need to talk. Please come by, if you get a chance. If you’re at work, come by afterward, if possible. ASAP, please,” Maria smiled devilishly after leaving a voicemail as she now jumped back on my cock and started riding me all over again.

“Geez, Sis, what’s this about? You’re gonna get caught by Chase in the act of fucking me!” I groaned, but my dick was stiffer than ever as I impaled my stepsister yet again with it.

“That’s the idea. Hey, want to switch positions? I just did cowgirl again to initiate things,” Sis encouraged me, as I winked at her.

“Sure. Doggy-style!” I told her and she eagerly got into position, offering me a chance to use her from behind.

“Oh, fucking God, Bro! I love it when you hump me like that!” Maria declared, actively meeting my strokes with her own, her sweet brown ass on display as I pumped her juicy twat with considerable vigor.

“I love your ass, you know,” I confessed.

“I love your cock, you know!” she answered me, “Go ahead, play with my ass! The kinkier the sex, the better it is! You know plump girls like me need loving, too!”

“Oh, that’s just a little baby fat, Sis! Nothing wrong with you at all! You’re gorgeous!” I told Sis as I fondled her booty, being honest as well as complimentary ... I found her small amount of extra plushness attractive, not ugly.

Maria’s lovely, long, jet-black hair was absolutely delightful as we fucked and I pulled it, along with rubbing her tush. She pouted, whimpered, cussed, and begged for more dick inside her. I was able to go balls deep inside her cunt, making her squirm as I bottomed out inside her snatch. She was absolutely amazing as a lover! The bed springs squeaked, just as we heard footsteps and then Chase’s scream of horror as he watched me pounding her sweet slit!

“Hey, there! Like what you see? You’ve fucked Maria, right? She is your girlfriend, after all,” I told Chase, as he stood there stunned.

“But ... we’re supposed to wait for marriage! What happened to abstinence?” Chase said, but he couldn’t tear his eyes away from my ass ... I could tell.

“Chase, Maria’s not a Seventh-Day Adventist and she never claimed to be. She doesn’t share your beliefs. She only dated you because our parents handpicked you for her! However, she’s willing to include you in the fun if you’re willing to unbend and open yourself up to this way of life. How about it? You could be my brother-in-law, she could marry you, but you’d have to go along with it. I have a girlfriend myself and I might possibly marry her, though that’s not clear. She’d have to pull her head out of her ass, just as you would need to do,” I encouraged him.

“But, but ... the church teaches that this is sin! This is just ... immoral! It’s sick ... it’s,” Chase didn’t sound convincing, as especially as Maria gestured for him to join us in the sack.

“Baby, you don’t have to convince yourself. You’ve got no one fooled in this room, including you. I like you more now than ever, now that you’re not so sure of your high and mighty, ivory tower righteousness! Don’t be a fucking Pharisee, hon! Come over, join us in bed, and do whatever comes naturally to you ... do what you really want to do!” Maria invited him.

“Yeah, do what really comes to mind! Follow your impulses!” I urged Chase, who found himself unzipping his pants and actually came over to me to press his hard cock against my ass.

“If you want to do that, Chase, get some canola oil or something and lube me up first. Then go ahead and hump me while I do the same to your girlfriend here! You sure that you don’t want a piece of her?” I challenged him.

“No ... sorry. I can’t pretend anymore. I’m not straight. I’m not even bi. I ... I’m gay. I’m fucking gay! Just don’t tell my family! I don’t know what I’d do if they disowned me!” Chase begged us.

“Chase, you can do it, buddy! We’ll be standing with you. Just join us, come out to your folks, and we’ll stand with you to them! We’re refusing to hide anything anymore. We’re going to be open and honest about ourselves, and take the consequences. No more lies. No more closets. You’re a gay man? Be upfront and let the world see just gay you really are! Be a proud gay man! Tell your parents, our parents, the Seventh-Day Adventist leadership, and the whole motherfucking world, ‘My name is Chase Stafford and I’m the biggest fucking homo in the world!’ You need to be you, to do you, to be free of these stupid rules and shackles! And you need to give me an ass-fucking that will really make me cum inside your ex-girlfriend here!” I urged Chase before he went to get the lube.

“That was amazing ... I’m going to fucking cum now!” Maria exclaimed as she creamed herself on me, “That’s the kind of man that I love, the brother that I adore! That’s the you that I always saw inside you! That’s the you that I want to put babies in my womb!”

I couldn’t help myself at the mention of seeding her, and I did just that, shooting my load inside my now ecstatic stepsister. She was so special to me and to have her respect and love was worth more than she could ever know. She was my kid sister, eighteen, sweet, impish, and beautiful in every way possible. She was more than worth it. I simply lay top of my lovely sister and rested my dick against her bottom as I awaited Chase’s return, hoping that he didn’t chicken out.

He didn’t, and in fact, not two minutes, Chase returned with plenty of canola oil to lube up my booty for his cock, which was slightly thinner, a bit longer, and very much on the veiny side. I was relieved that he wasn’t too thick, since it was me that was about to be penetrated, not Maria. Sure enough, he was a bit nervous, but he still managed to slip his dick into my butt. He was a bit rough at first, but I think that it occurred to him how it might feel to him if I had been rough on his ass, and he slowed down to let us both fully enjoy this first anal encounter between us.

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