Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/1225132.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Supernatural
  Relationship:
      Dean_Winchester/Sam_Winchester
  Character:
      Dean_Winchester, Sam_Winchester
  Additional Tags:
      weencest, Facials, Blow_Jobs, Masturbation, Weecest, Wincest_-_Freeform,
      Sibling_Incest
  Series:
      Part 2 of Uncovered
  Collections:
      Sunday_Morning_Porn_Club
  Stats:
      Published: 2014-02-23 Words: 2921
****** When The Walls Came Tumbling Down ******
by KatStark
Summary
     Dean threw his coat onto a chair and strolled down the hall to their
     shared bedroom but his steps sped up when he heard loud moans coming
     from behind the door. Loud, adult male moans. What the fuck? Sammy
     brought some guy home with him?
Sam sat at the kitchen table munching his Lucky Charms the morning after his
encounter with Dean (and Dean's dick). He'd lain in bed for an extra hour since
he wasn't sure he ever wanted to replace the flavour of Dean in his mouth, but
the siren's song of sugary cereal was too strong for him to resist. Plus, he
hoped he'd figure out how to get another dose of his big brother, and sugar was
essentially brain food (that's what he'd decided to extrapolate from his
biology class's study of glucose and the brain). While he pondered, Sam enjoyed
the quiet of the day before either his dad or Dean were up demanding he start
practicing his knife skills or whatever training they were focusing on that
weekend. He looked around the sunny kitchen and sighed. He liked this house and
wished they got to stay more places like it. He liked that they had an actual
kitchen with a view out to an actual yard.
Dean stumbled in when Sam was nearly finished his breakfast. Bleary eyed, the
elder Winchester brother fished around in the cupboard for a mug and poured
himself a cup of the coffee Sam had made to his exact preferences. Dean sighed
in pleasure as the warmth and caffeine hit his system and he jumped a little as
he noticed Sam sitting quietly at the table, staring at the dregs in his bowl.
"Morning, Sammy," Dean croaked, then grimaced, the effort of speaking clearly
hurting his head. Dean closed his eyes momentarily and took another sip of
coffee as he leaned against the counter. Suddenly, Dean's eyes flew open and he
stared at his little brother in horror. "Oh, fuck, Sammy. Last night-"
"I'm sorry, Dean," Sam blurted before Dean could get very far. "I don't know
what's wrong with me. I shouldn't have done that."
"Fuck, Sammy, no. Well, yeah, you shouldn't have, but I'm the one-"
"No, it's my fault. I'm really, really sorry, Dean." Sam looked up at his
brother with his best mid-level puppy dog eyes (he knew he couldn't play it up
too hard or Dean would get suspicious), then stared back at his bowl. "You were
totally right to punish me. In fact, I probably deserve to be punished even
more."
Dean was staring at him open mouthed so Sam rushed on, focusing hard on the
chipped formica tabletop.
"What I did was really messed up, Dean. You could do whatever you wanted to
punish me some more. Make me do you your laundry. Make me wash Baby. Make me
suck you off…" He glanced up through his eyelashes and saw Dean clench his
hands into fists before he turned his back to Sam and rushed out the back door,
walking a little stiffly. Sam raced to the window and tracked his older brother
to the garden tap and hose. He watched in shock as Dean turned the water on and
put the hose down his pants. Holy shit! It was November; that water must have
been like ice. Sam stepped back from the window, his heart pounding. This might
not be as difficult as he'd thought.
***********
 
"Sammy, I'm home," Dean called as he shut the front door behind him. "I
finished early so I grabbed dinner." Dean placed the bucket of fried chicken on
the kitchen table and looked around. Both the kitchen and living room were
empty, which was pretty weird; generally Sam was sitting either at the table
doing his homework or on the couch watching TV by the time Dean got home from
work. He always did his assignments out in the open when it was just the two of
them, but preferred to sit in his room when John was around. Their dad had left
that morning and wasn't due back for at least another week, though. Maybe he
was having a nap?
Dean threw his coat onto a chair and strolled down the hall to their shared
bedroom but his steps sped up when he heard loud moans coming from behind the
door. Loud, adult male moans. What the fuck? Sammy brought some guy home with
him?
Dean bit down on his bottom lip to stop himself from flinging the door open and
busting heads. He knew the kid had been lonely, so it made sense that he wanted
some affection, but the dude in there with him sounded way too old to be with a
fourteen-year-old like Sam. Make that dudes. There was definitely more than one
voice in there that wasn't his baby brother's.
Dean opened the door, bracing for the sight in front of him, but nothing could
quite prepare him for what he did see. Sam was lying on his bed naked with gay
porn playing full volume on his laptop, madly fisting his dick with one hand
while he held a t-shirt over his nose and mouth. Correction, while he held
Dean's AC/DC Back in Black tour shirt over his nose and mouth.
Sam hadn't noticed the door open; his face turned to the screen and the noise
covered by the moans coming from his computer speakers. He continued to stroke
himself feverishly, his skin flushing, his back arching off the bed. Dean heard
Sam's choked off grunts joining the chorus of other voices and knew Sam was
about to come. Suddenly aware of what he was standing there dumbly watching,
Dean backed quietly out of the room and pulled the door shut, taking a moment
to lean against wall of the narrow corridor to catch his breath.
He didn't think he could entirely process the gay porn thing, or the fact that
his own pants had gotten uncomfortably tight at the sight of his younger
brother jerking off, so Dean decided to focus on what his brain could handle.
The little shit. Dean thought that shirt had been stolen at the laundromat. It
finally made sense why many of his t-shirts seemed to disappear then reappear
again in his clean laundry. It also explained why Dad had pointedly left a box
of Kleenex on Dean's bed and announced that the boys could wash their own
clothes from then on.
Their bedroom door opened before Dean had finished that humiliating
realization, and he was faced with an incredibly shocked-looking Sam wearing
Dean's t-shirt. Though the kid had grown at least six inches that summer, he
was still shorter than Dean and the garment hung off his slim frame and down to
nearly his knees. Dean's cock did not stir at the sight. He was just
remembering the hot girl he'd picked up at the bar last night. That was his
story and he was sticking to it.
"Uhhh," Sam mumbled, tugging the frayed hem of Dean's t-shirt down to cover
more of his bare legs.
"Yeah," Dean replied, following Sam's fingers and nearly choking as he noticed
a few pearly splatters of come that hadn't yet soaked into the fabric.
"Knees," Dean commanded, mouth taking over though his brain was no longer
functioning, stuck on a repeating loop of Sam's come.
"What?" Sam answered, brow furrowing like he hadn't heard what Dean said.
"On. Your. Knees," Dean snarled and Sam complied immediately with the tone, if
not the words.
Dean's hands were already unzipping his jeans when Sam's knees hit the carpet
and Sam's nostrils flared as Dean pulled his semi-erect cock free. Dean stroked
it the rest of the way to hardness while he shoved his jeans and boxers down
below his hips with the other hand.
"Spit," Dean demanded, holding his left hand in front of Sam's face once his
pants were out of the way. Sam complied without taking his eyes off Dean, and
at his older brother's insistence, filled Dean's palm. Dean stroked Sam's
saliva over his cock, feeling a low buzz in his balls at how fucked up it was
that every stroke felt even better because it was his younger brother's spit
slicking the way.
Sam's face was inches from Dean's cock as he stripped it, and in an
embarrassingly short time Dean was blowing his load across Sam's pretty
features. Come dripped from cheekbones that hadn't yet lost their youthful
padding and dark eyelashes that hid changeable eyes. Sam's pink lips had formed
into a slight O when the first spray hit his cheek, but that split into a large
smile as he opened his eyes and regarded his panting older brother.
"Go clean up, Sammy," Dean breathed, tucking himself back into his clothing.
Sam stood, an entirely too-knowing expression in his eyes as his tongue darted
out to lick up some of the mess on his face.
Dean was officially fucked.
**********
 
Dean sat on the couch watching the movie Sam insisted they rent because his
Spanish teacher had insisted they watch 'more movies where people speak fluent
Spanish'. Dean was pretty sure that Y Tu Mamá También was not exactly what the
teacher had had in mind with the hot sex scenes and - Holy Shit! - threesome.
Sam missed most of the sexy stuff since he had fallen asleep as he inevitably
did during movies and was stretched out across the couch using Dean as a
pillow. Dean was shifting a little in his seat - the kid could be a bit of a
dead weight - when he heard Sam call his name.
Dean looked down at Sam but he still seemed to be sleeping. Sam often flailed
and talked in his sleep, so Dean put his hand on Sam's back to soothe him,
returning his eyes to the television until he felt Sam grinding against the
couch and repeating Dean's name.
"Oh yeah, Dean."
Dean froze and finally realized Sam wasn't calling for Dean from the depths of
some nightmare, he was humping the couch in his sleep and moaning Dean's name.
Shit. Shit. Shit. Dean felt a stirring in his own crotch so he squeezed his
balls painfully to stop that train from leaving the tracks. This couldn't keep
happening.
Sam's hips were moving faster and faster and Dean felt helpless to do anything
but wait for the kid to finish. Then they were going to have to have a
seriously awkward conversation about boundaries and normal sexual outlets.
Shit!
Sam didn't wake during his orgasm, but it only took a few minutes of come
cooling in his shorts to pull the teen from slumber. He sat up suddenly and
looked at Dean, desperate hope in his eyes that somehow Dean hadn't noticed.
That hope fled when he saw Dean's raised eyebrow and he burst into tears.
"Fuck, Sammy." Dean felt like such an asshole. "It's embarrassing but there's
no reason to cry. C'mon." He pulled Sam into his arms for an awkward hug and
kissed the top of Sam's head. "You just need to clean the pipes more often and
this won't happen." Sam only cried harder and buried his face in Dean's
shoulder. "C'mon, Sammy. It's not that bad. Being a teenager sucks. Believe me,
I know. I've been there. Hell, I'm still there. Now tell me what's going on."
Dean tilted Sam's chin up so he could study the kid's face and was completely
unprepared when Sam surged forward and kissed him, all tongue and entirely too
wet.
"Whoa!" Dean shoved Sam's mouth away from his own. "What the fuck, Sammy?"
"I knew you wouldn't understand," Sam spat, furiously. "You think I'm a freak."
His surge of anger seemed to dissipate and Sam curled in on himself and pulled
away to the other end of the couch.
Dean felt his heart breaking and moved in close, back in protection mode. "Of
course, I don't think you're a freak, Sammy. I mean, you're pretty weird. And
there is that smell…" Dean wrinkled his freckled nose.
Sam's hazel eyes met Dean's green ones in shock that Dean would mock him at a
time like this but couldn't maintain his righteous indignation against Dean's
winning grin.
"I just don't get why you want to kiss me like that. I'm your brother, Sammy. I
love you and would do anything for you, but brothers don't do that. You
shouldn't have these kinds of feelings about me. Aren't there any girls," he
quickly changed genders as Sam scoffed, "or even any guys in your school that
you like?"
"All the girls at school are so soft and giggly. They're so focused on boybands
and nail polish. They have no idea how to field dress a weapon. And none of
their mouths are nearly as nice as yours. And the guys... Even the cute
football players are just entitled jerks. They have no idea about sacrifice and
real strength. They're not heroes like you. If a werewolf came running at them
they'd shit their pants. They wouldn't be able to calmly fire silver bullets
into its heart."
Dean preened a little as he thought about how useless the assholes he used to
go to school with would be dealing with even a quarter of what the Winchesters
faced weekly, but he blew off Sam's praise. Dean was never comfortable when Sam
tried to talk about what a hero his big brother was.
"Please, Dean. I've never kissed anyone, really. Could you just-?"
Dean closed his eyes, Sam's earnest expression too much for him to face. He'd
never been able to deny the kid anything, and as wrong as this was, he was
kidding himself if he thought he could start saying ‘no’ now. Sam had been on
the receiving end of two of Dean's facials. Could Dean really take the moral
high ground over kissing?
Dean leaned in and his lips ghosted over Sam's, but he pulled back when Sam
tried to plunge his tongue into Dean's mouth again. "Slow down. Let me," he
instructed, and Sam backed off immediately. Dean pressed his mouth to Sam's
again and kissed him softly and gently, letting his younger brother get the
feel of how much pressure to use as he kissed back. When it felt like Sam was
ready, Dean parted Sam's soft lips with his tongue and slowly slipped inside.
He groaned at the taste of cherry pop and something that was so essentially
Sam.
His traitorous dick was responding entirely too readily to the sensation and he
twisted his hips away so he wouldn't grind helplessly against Sam and his
soiled shorts. His brother was a quick study and when he slid his tongue into
Dean's mouth this time, it wasn't nearly as wet and floppy. Dean murmured in
approval and Sam began exploring Dean's mouth as the kiss deepened.
Dean had entirely lost track of how long they'd been kissing when Sam finally
pulled away. It had been years since Dean had kissed someone like that, with no
backing track running in his mind about what might come next, just kissing for
the sake of kissing. It didn't mean that Dean wasn't rock hard in his jeans,
but he chose to believe that was because of the hot woman in the movie, not
because he'd been making out with his little brother.
Sam pushed him back into the couch and quickly unbuckled Dean's jeans. He
quashed Dean's immediate protests.
"You did something for me. Now I'm gonna do something for you. Reciprocity. We
learned about it in school."
"I surely hope you didn't learn this in schoo-nngh!" The end of his sentence,
along with any of the protests he was trying to come up with, evaporated from
Dean's brain as Sam wrapped his supple lips around the head of Dean's cock. He
didn't need as much guidance as with the kissing - obviously all that gay porn
had taught him something. After a couple failed attempts at deep throating, Sam
settled into a rhythm of licking and sucking the crown of Dean's cock while
stroking the thick base with his hand.
Dean sank back into the cushions and his hips slid forward enough for Sam to
fondle his balls gently with his free hand. Fuck. Sam was too good at this.
Dean had to keep his hips in check so he wouldn't thrust into Sam's mouth and
choke the kid, but from the moans he was making around Dean's shaft, and the
way he was grinding against Dean's shin, Sam was really enjoying himself.
Dean finally let go of all the reasons this shouldn't be happening and gave
himself over to sensation. He felt Sam stiffen against him and realized that
Sam had just creamed his shorts for the second time that night. Fuuck. Dean
felt his balls tighten in Sam's fingers and choked out "I'm coming" in an
attempt to give Sam a chance to pull away. Sam did nothing of the sort, and
Dean felt his younger brother's lips tighten around the head of his cock as Sam
swallowed every drop that pulsed from Dean's slit.
Sam clambered limply into Dean's lap wiping his mouth with the back of his hand
before Dean claimed his lips in a soft kiss.
"What am I gonna do with you?" he murmured, mostly to himself.
"Shower?" came the unexpectedly enthusiastic response.
Dean just shook his head momentarily before nodding and demanding that Sam help
him up. He kicked off his jeans as they walked, groaning like a grumpy bear,
which made his younger brother giggle. Sam took Dean's hand in his smaller one
- which wasn’t likely to stay that way at the rate Sam was growing - and Dean
just let Sam lead on.
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