Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/11944380.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Homestuck
  Relationship:
      Dave's_Bro_|_Beta_Dirk_Strider/Dave_Strider
  Character:
      Dave_Strider, Dave's_Bro_|_Beta_Dirk_Strider
  Additional Tags:
      Alpha/Beta/Omega_Dynamics, Incest, Watersports
  Stats:
      Published: 2017-08-29 Words: 2763
****** Trading Licks With Muddy Waters ******
by Cerberusia
Summary
     It's not really a problem until you hit puberty.
     In retrospect, you should have been warned by how Bro must always
     have been Houston's Least Likely to present as omega - until he did.
     Because you're not a beta, and you're not an omega. When you're
     thirteen you get crazy horny for two days straight, so bad you can't
     even sleep, and when you're jacking off for the fifteenth time in
     forty-eight hours your dick swells, something shifts inside you, and
     out pops your knot.
Notes
     This is another fic with the same premise as "Brimstone In My
     Garden": omegas wet themselves to signal their heats, and this is
     normalised. The difference between "Brimstone" and this fic is that
     here we swap the dtynamics: Dave is the alpha and Bro is the omega.
     With thanks to the anon on Tumblr who sent me an ask about omega!Bro
     - you've got some good ideas, friendo.
It's not really a problem until you hit puberty.
It's not meant to be a problem even then, because you're definitely going to
present as either beta or omega. You're not supposed to be able to predict how
people will present based on how they act as kids, but you're pretty much the
archetypal laid-back beta. Or you could be omega like your Bro, you guess. But
probably beta.
In retrospect, you should have been warned by how Bro must always have been
Houston's Least Likely to present as omega - until he did. Because you're not a
beta, and you're not an omega. When you're thirteen you get crazy horny for two
days straight, so bad you can't even sleep, and when you're jacking off for the
fifteenth time in forty-eight hours your dick swells, something shifts inside
you, and out pops your knot.
"Well, damn," you say, staring at your dick. You're so shocked that for a
moment you forget how bad you need to come. Then your whole dick twitches, your
knot aches, and you get your hand behind it and squeeze, and you're coming like
a firehose all over the shower wall.
You don't actually tell Bro you've presented as an alpha. The next time you
strife, he pins you to the hot concrete rooftop - and sniffs you. Then he hauls
you up again, kicks your legs apart for a better defensive stance, and you have
to go right back to fighting for your dignity.
That's the end of it. No bro-to-bro talks, not even a comment. When Rose
presented as Alpha a month back, Mom wouldn't stop trying to have 'motherly
chats' with her. It may look like Bro doesn't care, but actually you're lucky
that he trusts you to deal with it yourself.
'Dealing with it' is mainly just reading a lot of stuff on internet advice
boards and switching to jacking off in the shower to deal with the gallons-of-
spooge issue if you accidentally pop a knot. Apparently eighty-five percent of
alphas have trouble controlling their emotions when they first present and get
angry or depressed at everything, but you have no emotions, so you're fine.
It's definitely not the worst entry to puberty.
At least, it's not the worst entry to puberty until Bro goes into heat.
It shouldn't surprise you, because duh, Bro is an omega, omegas go into heat.
You've seen him in the early stages before. You've heard him grumble about
getting piss on the futon. You'd even strifed a few times with that funny
sweetish smell coming off him. You'd just told him that if he peed on you he'd
regret it.
But somehow, you totally forgot. You forgot that you'd have to live in a small
apartment with an omega who went into heat, who suddenly smelled sweet and
musky and really good.
So it's just a normal day. It's Friday, you've finished online classes, and
you've got nothing much to do. You're kinda thirsty, so you head to the kitchen
to get some apple juice.
In the kitchen, you find Bro. He's doing the washing-up, such as it is in this
household: from here it looks like mainly shuriken, a sparkly purple puppet-
sized dildo, and a couple of weirdly-shaped plastic things you don't want to
enquire about too closely. The crotch of his jeans is dark, with a wet patch
spread a little to the left.
A few months ago, that wouldn't have bothered you. You'd just have been like,
oh, Bro's going into heat, better stock up on orange soda 'cause he goes
through gallons of it when he's on heat. Omegas wet themselves during heat to
tell any alpha around they're down with having a hot spam porpoise jammed up
where the sun don't shine, it's a reflex. It's inconvenient to totally piss
yourself in public, but some leaking is just normal. You see omegas walking
around downtown Houston like that all the time.
It doesn't seem normal now. You don't care about the apple juice any more: you
can't stop staring at the wet patch on Bro's jeans, or stop smelling the sweet
waft of pheromones coming off the back of his neck. His body is telling every
alpha in the vicinity, 'Hey, fuck me! I'm available!'
And you...you're an alpha now.
You go back to your room very slowly. Your vision is blurry. Your mouth is dry
- should have got that apple juice. You close the door, lean against it, and
desperately fumble your zip open and pull out your hard dick. You jack off
furiously with the phantom of your Bro's sweet heat-smell in your nose. You
know you're going to pop a knot and you don't care, it slides swollen out of
your body and you squeeze your other hand's fingers behind it and you come all
over the floor of your bedroom, hot white jets spurting and spattering on the
carpet, your mind going blank for long, dizzy minutes.
When your knot finally deflates and your head clears, you swear at the puddle
of spunk on the carpet and set to mopping it up with toilet paper. Bro's going
to make some cutting comment about you marking your territory, you just know
it.
So you can't use the living room-cum-kitchen for the next few days, because
that's where Bro usually is. OK. Any Call of Duty marathonning would have to
wait, if you had any planned, which you don't. Food is slightly more
problematic, but if you dive straight in when the takeout arrives you should be
able to grab your portion then flee to the sanctuary of your room. It's only
for the next two or three days, and it's not like Bro will be around much
either: he'll be taking advantage of his heat to produce more quality human-on-
puppet action for PlushRump.com.
Thinking about your Bro making porn, even frankly unappealing puppet porn, is
not helping you. You make a nest of blankets and pester Jade about furries
until dinnertime.
You're apprehensive about potentially meeting Bro in the living room, but by
the time you get there he's already absconded, so you're able to olly out with
the remaining pizza half. You take your mind off all this horseshit with Bro by
drawing another SBaHJ comic with some shitty jpeg artifacts deployed to truly
devastating artistic effect, and go to bed feeling accomplished and full.
When you wake up the next morning, the whole apartment is saturated with that
smell.
Bro is in the bathroom, so you brush your teeth over the kitchen sink, trying
to wash the pheromone taste emanating from the futon out of your mouth. Fuck
breakfast, you can get a McMuffin or something, you just need to get the hell
out of this apartment. Your boner is going to break your zip.
You get your wallet out your room as fast as you can and sprint back into the
living room, towards the front door, towards freedom.
Bro is there, lying on the futon. He's taken off his pants, so he's down to
boxers and a t-shirt. Whatever, he can do that, it's his apartment. What
worries you is that he's also not wearing his hat. Bro always wears his hat.
You're pretty sure he sleeps in it. It's an essential part of his ironic get-
up. (Not that you wish to imply that your Bro is anything less than the human
embodiment of irony at all times, because that would be blasphemously
inaccurate.)
You need to creep by him to get out. He already knows you're there, because
that's the kind of mad ninja skillz he has, but if you're really quiet he might
just pretend he doesn't.
"Dave."
You freeze halfway across the room.
"Get over here." Bro doesn't raise his voice. You get over there, carefully
stepping over smuppets and other impudently jutting plush asses to peer over
the back of the futon at your Bro.
You've never seen Bro really on heat. You've never seen any omega on heat up
close like this. Bro is poker-faced as always, but breathing heavily through
his nose. His smuppet-patterned boxers are wet, and you desperately look away
to avoid catching a glimpse of what's underneath through the translucent white
fabric
Bro takes a deep breath through his mouth - a deep breath of you - groans, and
pisses himself. He just totally drenches himself, piss soaking his boxers and
running down his inner thighs.
That does it. It doesn't matter what he actually called you over for. Your Bro
just pissed himself to tell you, an Alpha, that he's ready for fucking. He
smells incredible. Your control just - snaps.
You try to crawl on top of him and pull off his boxers at the same time. It's
not the smoothest move you could have pulled, but you manage to yank them down
to his knees and finally get a good look at what he's packing. This is a small
apartment and you've seen Bro's dick before, but never like this hard and wet
and occasionally dribbling another tiny stream of piss. He's so ready for an
Alpha, he's so ready for you.
You tear open your jeans and grab your dick, which feels like you're going to
go off any minute. You're surrounded by omega pheromones, and you can feel your
knot trying to pop. Bro is just lying there, his face impassive, even though
his dick is so red and hard. You stretch out on top of him to mouth clumsily at
his thin lips, planting your hands on his heaving, muscular chest. Please,
please.
He holds out for a long second, body taut as a bow-string beneath you - and
then he grabs you by the shoulders and attacks your mouth, pushes his tongue
between your lips and licks every part. You try to keep up with what he's
showing you, but this is the first kiss you've ever had and Bro is overwhelming
you, practically fucking your mouth with his tongue. His legs open wider to
welcome you, letting your thighs settle between his. Your stiff dicks rub
against each other, and you kiss him harder, stroking and pushing at his tongue
with yours, almost fighting to get inside his hot mouth.
You can't control yourself. Your mouths slide together and make wet sounds.
You're making small swallowed moans in the back of your throat. Bro is vitally
alive under you, kissing you, putting his hands under your shirt to dig his
blunt fingernails into your back. He rolls his hips to press your dicks
together and you have to get inside him, you have to. You can smell the slick
leaking out of him, and for once you have what he needs.
You reach down to grab your dick at the same time as Bro bends his knees and
exposes his asshole. Perfectly in sync. You ought to take it slower, try some
foreplay, put your fingers up his hole which always looks incredibly hot in
porn - but he's impatient and much more experienced than you, your teenage cock
isn't going to hurt him. After the dildos you've seen littering the apartment
floor, it may not even satisfy him.
Bro wraps his legs around your waist and digs his heels into your ass like
you're a horse. You guide the head of your dick to Bro's slick asshole with a
fumbling hand, breathing into his mouth, shaking with arousal and nerves - and
then it just slides in. No resistance: you thrust your hips forward into that
tight heat, and Bro's ass swallows your dick right up to the base, right up to
where your knot is still hiding inside your body.
Bro groans, low and guttural, throwing his head back. You want to say some
stupid porno shit like Does it feel good, baby? But you can't speak, so you
just suck hard at his neck and thrust your hips. It makes him moan again, and
you like that, that's the sexiest goddamn thing you've ever heard, so you keep
doing it, you keep fucking him.
You're fucking Bro. Bro is a juddering solid mass of muscle underneath you, and
you're making the futon creak with how hard you're driving your dick into him,
and he's moaning and groaning and acting like he loves having your dick inside
him.
His legs are tight around your waist, and one of his hands stops clawing at
your back to reach down and grab your ass. He pulls you down at the same time
as he thrusts his hips up, and you say, "Shit!" and he says, "Fuck." He does it
again, and again, and your mouth is hanging open and you can't stop making
sounds, and Bro sounds like he's getting the best, deepest dicking of his life
as he rolls his hips and moans underneath you.
Something familiar shifts inside you - and out pops your knot.
"Bro," you gasp, eyes rolling back, "Bro, I-" You can't talk. You need to come.
Bro is riding you hard, and you've got to, you've got to -
Bro's heels dig into your ass again. You grab his hips to get a better angle,
and start to shove your knot inside him. It's not fully swollen yet, and the
first bit slides in easily, but when you meet more resistance you're afraid
you'll hurt him.
Bro grunts and grabs your ass harder, forcing your knot into him.
"C-Careful," you say, and immediately want to slap yourself because who says
that during sex? Who's worried about health-and-goddamn-safety in the middle of
a heat-fuelled dicking down? That's real sexy, Dave, acting like a nervous
virgin around this guy who's clearly desperate to get your knot in him.
"Put it in me," says Bro, in a tone dangerously close to a growl. "I can take
it, just stick it in."
So you stick it in. You let Bro pull you forward and feel his asshole open
around your knot, his body letting you enter. He opens his mouth in a silent
groan as his ass stretches around the widest part of your knot, which is
swelling by the second - and finally it pops in and you thrust the rest of it
inside him with a desperate gasp.
You rock your hips frantically, tied together so you can't thrust properly any
more. His asshole clamps down behind your knot and his legs kick as he tries to
work himself on your dick. You hump desperately, feeling your knot swell inside
him and his hard dick spurt out another stream of piss between you. He needs
it, you both need it, and any moment now it's going to happen, you're going to
fill him up -
Bro's nails drag down your back, your dick swells and throbs, your body seizes
up, and you come. The knot locks you inside Bro as your dick spurts inside him,
on and on, filling him up with your come. Bro gasps a mangled swearword and you
feel his asshole contracting around your dick, his insides squeezing you, his
dick flooding your belly with come.
You don't stop coming for an age, a minute. Semen pumps out of you into Bro,
who groans and shudders and convulses underneath you. Everything is a white
haze.
You come back to Earth with the taste of blood in your mouth. You've bitten
Bro's shoulder. You don't remember doing that. You remove your teeth from his
skin and lick the wound apologetically.
Bro is quiet and still underneath you. Your knot is still swollen inside him,
tying the two of you together. It won't go down for a while: maybe ten or
twenty minutes, since you've not been able to pop a knot for that long yet. You
feel like there's something wrong with this picture, but also like you don't
care. Your knot is inside an omega, keeping your semen inside, and you feel
like you're floating.
You settle yourself more comfortably on top of Bro, resting your head in his
neck. He smells like the two of you combined, just right.
After a moment, his hand comes up to rest on your head. His fingers move. It
takes you several seconds to realise that he's stroking your hair. Bro hasn't
stroked your hair since you were sick and almost too young to remember it.
You close your eyes. Bro's arms are around you, his hand is stroking your hair.
Your knot is inside him. A bird is cooing outside the window. You don't have to
separate. He can't push you away just yet.
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