Brotherly Lust

Story by Roundrat on SoFurry

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This was Sydney's first incarnation. The big dumb rat was more of a bully here than he's become since, but I always had a weakness for an obliviously-fat jock type.


I turned over, waking up to the sounds of shifting in the room. I heard a deep male grunt, and I opened my eyes. A dim light from the adjacent hall curled through the open doorway, and I could make out the silhouettes of two rats. My brother Sydney was lying on his back, looking up to one of our sisters. As she pressed her paws against Sydney's round gut, I knew it was Hazel; she was the only one who wasn't expecting.

Not yet.

From my end of the heavily blanketed floor, I watched the two rats as they fucked. Hazel did most of the fucking though, lifting herself up along my brother's fat rod and then sliding her weight back down onto it. All the while, her long tail swam through the air like a snake.

I've seen Sydney's cock grow over the years, and I knew it wasn't only stretching the poor girl wide but also plunging deep inside her, the head of it probably kissing her womb with every stroke.

My breath became shaky and I had to close my eyes. I reached a paw down to feel my own erection, slim and not nearly as long as Sydney's. I was lying too far to reach a paw out and touch them, but even if I could, I wouldn't dare interrupt their lovemaking. With all our five sisters, it's been Sydney who's attracted them all. Of course when we were younger, Sydney was more trim and energetic. How he's grown so quickly, I don't know; I see him eat just as much as I do. Then again, he doesn't get out of bed so much anymore.

"Fuck it," Hazel cried, throwing her head back as she rode my brother's meat. "Fuck it in me, big rat. Big fat daddy rat. Fuck a litter in me, you...fat...lazy...brute!"

I tugged my cock, matching their quickened pace. Sydney wasn't doing much more than running his chubby paws down her arms and breasts, but Hazel was bouncing with a fury, pistoning her entire body on that fat cock of his, riding it for a belly full of cum.

"Spray it in me! Make me pregnant, Sydney. Cum! I want your baby."

As she fell to pleading, Hazel lowered herself, arcing her slender body over my brother's bloated sphere of a stomach, which was shaking to their passionate fucking. Sydney grunted over and over, louder each time and then he gripped her tiny waist in both paws and held her tight to his crotch, and I knew he was flooding my sister's womb with streams of cum. Though I couldn't see it, I imagined the warm pool of cream escaping her lips and spreading between their gasping bodies. I closed my eyes tight and listened to their sighs and softening grunts as my cock spat an ounce of seed into the bunched-up sheets.

"There," Sydney said. "Get the fuck offa me."

Before I returned to sleep that night, I looked over my brother, resting in his afterglow, his cock still hard and wet beneath a mound of fat that rose and fell with his breathing. I fell asleep imagining I was suckling on that huge prick, cleaning it of all its sweet and sticky seed.

I was fueled with enough desire from the visions of the night before, that when I woke and looked over at my still sleeping brother, I gripped my cock and started stroking. Just the simple thought of nuzzling up against his beefed up body was enough for me. I had no idea what had come over me. I had often admired my brother before. Even as kids, I secretly wished I could grow up to be just like him. Now, for some reason, I wanted him all to myself; to hold, to caress, to kiss...deeply.

My orgasm made me shudder, and I looked down at my cock, spitting spunk into the sheets that I had stained only hours before. When I looked up again, my breath still a little ragged, Sydney was looking back at me.

"What the fuck you lookin' at?" he asked.

"Nothin'," I said and turned my gaze away. I was digging my pointy muzzle into the sheets when I heard Sydney groan. Peeking with one eye, I watched him hook his muscular arm around his ball gut and attempt to wrap his furless paw around the trunk of his dick. He jerked at it laboriously and eventually gave up. I noticed his head turning my way and I quickly shut my eyes. A moment later, I felt a soft cushion graze my left ear.

"Hey!" I called out and put a paw over my head. Sydney was snickering.

"Jass," he said. "Where's Menna?"

"I don't know."

"Go get 'er."

"Go get her yourself!"

"Come on," Sydney whined. "Just do this for me?"

"Oh, a favor, huh? For my adoring brother?"

"You know I love you."

The words were nice, but the tone was mocking. I got up with contempt, not for charity. I hated it, but I knew if I didn't get up, he'd continue to assault me until he got what he wanted. Good ol' Sydney; what a lucky bastard he turned out to be.

I found Menna in the kitchen. Her coffee fur was sticking up in places. She was leaning into a steaming pot of gumbo and ladling meat into her maw. When she saw me, she smiled. Her eyes looked tired.

"What's up, Jasper?"

"Not much, Men. Sydney was looking for you."

"Hope he didn't strain anything."

I leaned against the doorframe as she slurped at her breakfast. I noticed then that her shoulders seemed broader though her face had remained angular in its features. Menna had a harsh beauty, both inside and out.

"Menna!"

I half turned toward the yell that issued from the bedroom. Menna kept shoveling gumbo for another ten seconds, seemingly deaf to her brother's demands, but then she dropped the ladle into the pot, scooted her chair back, and stumbled to her feet. Her tail swayed drunkenly.

"Fat fuck," she muttered. She scowled downward until she came near me. Then as she lifted her gaze, she smiled, and I could tell that she forced it through her exasperation. She put a paw on my hip. "Excuse me, dear."

I blushed as I cleared the doorway for her. Menna was much shorter than I, and I was always used to her petite frame; it just didn't register that with her distended abdomen--fat as a stuffed piglet--she was about as wide as she was tall.

I stepped over to the table and looked into the pot Menna had been eating from. I sniffed at the remaining gumbo but turned my attention to a half-gnawed hunk of bread and grabbed that instead. Tearing small chunks from the loaf, I casually walked back toward the bedroom.

"Just put it in," Menna was saying. "You can't...why can't you?"

"I gotta...just get up and move...there."

"It's not happening, lard ass. Can't you get up and do something for a change?"

I turned the corner and stood in the archway, watching my siblings shift awkwardly over one another. I had to suppress a laugh every time Menna tried to sit on Sydney's cock. Her big pregnant belly kept pushing against Sydney's swollen pot, making it impossible for my brother to get his dick in her.

My laughter stopped though and my hunger for the bread in my paw lost importance. I found it replaced by some kind of envy; I wanted to move my sister out of the way so I could ride Sydney instead. With my meager frame, I was positive I'd be able to part my legs around that massive gut and impale myself on Sydney's shaft. Of course then my cock would be helplessly pressed between us and I could just blissfully fuck that fattened sphere until I came all over it.

"This is a fucking waste," Menna said and stood up, pointing at Sydney who just looked flabbergasted and put out. "No, you're a fucking waste! You hear that, you fucking scum?"

"Woah, woah, what the fuck'd I do? Get back here!"

"No more. I don't fuck pigs, you twisted fuck. And don't crawl over me while I'm sleeping anymore, Fatso. You'll crush my baby."

I pivoted like a batwing door when Menna stormed past. I had to swing forward just to miss the whipcrack of her tail-tip.

It was almost comic to look back at Sydney, who hadn't moved from his place all morning. Now, he just lay on his back, staring at the ceiling for some kind of explanation. It wasn't until I took a step into the room that he noticed me.

"Where the fuck'd you come from? Gimme that sandwich."

"It's not a sandwich. It's just bread."

"I don't care. I haven't eaten all day."

"You've been up for like twenty minutes."

"Shut the fuck up and give me the bread."

I tossed it at him, snickering as it bumped the underside of his muzzle. Crumbs fell to the fur on his double chin and he grabbed at the bread, instantly cramming it into his mouth.

"Shit, I need some milk," he said. "Where's Joni?"

I shook my head and sat down on the floor near Sydney's feet. At an angle, I could still see his head around his stomach.

"Still wanna get off?"

I didn't put much thought into those words. If I did, I never would have let them escape me. It was such a weird rush to be so casual, I didn't even let myself think about how bad it could have sounded. At least not until Sydney started cackling.

"What? You wanna suck me off?"

"No," I said, laughing a little myself. "I just thought..."

"Hey," he said. "If you wanna dip down there and give me a good tonguing, I'm not gonna give ya grief about it."

That was a promise I'd fallen for a million times. There have been plenty of times when I have wondered if Sydney's sole purpose in this world was to give people grief. Still, if he was just kidding and I actually did it, I'd never live it down. If he was serious, then every passing second I thought it over would give Sydney another chance to change his mind.

Sydney didn't laugh any more though. He didn't wave me back or kick me away. He just let out a big pleasurable sigh and nearly every muscle in his body went slack. As for me, my heart started fluttering as soon as I leaned down. I rested my forearms on the ground between his legs and to either side of his thick spiny tail, and I placed my parted lips on the head of my brother's cock. I kissed it, slurping up the moisture he had already made from his recent attempts with Menna.

I swirled my tongue around the stickiness, letting it loop around a couple times before I gave the full fat head another lick. I melted with the salty taste, the wetness. I shut my eyes, and my paws found Sydney's fat thighs. My fingers combed through the chocolate fur, and I felt my heart leap.

"Yeah," Sydney cooed. "Kiss that cock. Give it a good sucking...ooooh, shit! Damn, that's a good warm...wet...."

His voice dropped away as I rubbed the underside of his cock with the full breadth of my tongue. His prick pulsed and gushed out what I at first thought was pure semen. It filled my mouth so much, my cheeks puffed out. I lifted my head and savored the taste before gulping it all down. I looked again at Sydney's cock; it was leaking thick clear fluid. I caught it with my tongue as it dripped to his sheath. As I did, I darted my tongue under the furry skin, folded tight around Sydney's still throbbing member.

I heard my brother squeak and moan. One of his chubby paws found my shoulder and squeezed. His legs were still tensing, and as his cock dribbled, I kept lapping it up. With another squeak, Sydney shot some of this clear ejaculate into my face. I used my arm to wipe it from my cheek and eye, but it only smeared and stuck in my fur; some of it was growing cold on my ear.

I couldn't believe it. This was just Sydney's precum. I held my brother's fat sac in one paw and watched as his balls rolled from my palm. I held one and couldn't even hide it all with my paw. They were both full to bursting with Sydney's hot cum. I looked over my brother's pulsing rathood with a note of fear and admiration. It was suddenly so huge; fitting for Sydney's new girth.

What a rat, I thought. And there he was, squirming for release. The release he has allowed me to provide.

With my fingers spread wide, I placed a paw flat on the curve of his underbelly. I gave it a light squeeze and watched as my claws dimpled the soft furry flesh. I put my other paw across the inside of Sydney's thigh. Here, it was much softer and I could shift the fat just by putting my weight on it. I smiled at the thought, but my smile turned to a grin when I realized Sydney couldn't even see my reaction to his chubbiness if he tried: his big fat gut separated our eyes like a giant fuzzy boulder. Not allowing another second to pass, I opened wide and took my brother's cock into my hungry muzzle.

The meat packed my long muzzle so full my jaws began to ache, but listening to my brother groaning with delight and feeling him squirm under my paws made it all worthwhile. I moved my paw around Sydney's gut, squeezing here and there until I just rested my forearm against it. Sydney gave me another copious helping of precum. I used some of it to make his rod nice and slick, but I gulped down the rest. I was already feeling full.

I curled around his cock and slipped my feet under his tail. It was heavy and thick; almost thicker than my waist, though I suppose that's not saying too much. I got more comfortable, even got used to my snout brushing against Sydney's warm underbelly as I slid up and down over his shaft.

Sydney kept a lazy paw on my back, and occasionally he would stroke it up and down or rest it on my shoulder. Despite everything else, it was this affection that made my own cock twitch, and love spread throughout my body. Again, Sydney gushed a muzzleful of pre for me to swallow.

"Come on over here," Sydney said, keeping his voice low.

I was just about to pull off when I heard another voice. It was from one of the girls.

"Ooh, I see you have a new cock warmer."

They both laughed, and I could tell it was Joni.

I had slowed my pace to listen. I really wanted to see what was going on, but I was afraid if I stopped, even for a second, I might make Sydney angry. I didn't want to lose this chance before I even got a taste of the treasure I've been dreaming of for so long. I had to prove to Sydney that I was a good cocksucker. I had to please him. I wanted him too much just to let him down now.

I kept hearing little giggles though, and I could feel Sydney's tail moving against my feet. Then I saw a long foot glide against the sheets beside my brother's rump. Sydney was suddenly gasping. He shifted a little but then his heavy body just rocked back and forth like a settling egg.

"Careful," Joni said. "You'll get so fat you'll never get up again."

"I need it," Sydney said. His voice had changed, and it was strange to hear. There was a childish yearning to it now, nowhere near as tough as it normally was. "It's so sweet."

"Aww," Joni said softly. "The big baby needs his milk, doesn't he? That's it, Sydney. Go on. Suck it all out. Fill your belly with my, oh! Fill your belly with my milk."

Sydney's cock had softened a little in my mouth, so I stopped listening to my brother's feasting and got back to my own.

Precum coated his prick. I kissed and licked it all over, even sneaking a kiss to his belly here and there. I used both paws to scratch at his love handles and kept bumping my nose into his gut as I continued to bob on the stiffening cock. Before long, I had another mouthful of pre to gulp down and Sydney's moaning grew louder. I could just imagine him grasping those huge jugs and suckling them dry; Joni was whimpering and crying out but all I could see were her feet skidding across the bed sheets.

I gave it my all then. I tugged and cradled those giant balls, still churning loads of seed. My own cock leaked pre over Sydney's tail. His legs suddenly squeezed me between them. His feet locked behind my back, and I slavered over the cock I was servicing. I had to wrap both paws around its base to get a good enough grip. Sydney sent another healthy spurt of pre into my muzzle, and after I swallowed, I felt my stomach bloating a little. Sydney's thighs flexing on either side of me didn't help too much either. Then I heard him gasp out loud.

"Oh, Sydney," Joni said. "That's it, baby. Go ahead and cum, sweetie. Let it all go. Jasper's gonna swallow every drop."

It was my turn to squeak. In the fear of this sudden expectation, my cock spasmed and squirted cum against Sydney's furry cheeks. I knew I couldn't pull away if I wanted to; Sydney had me locked so firmly in place.

"Good ratty. Keep drinking. That's a good boy."

The first blast surprised me so much my eyes shot wide open only to be instantly blinded by the fat of a quivering rat gut. I locked my muzzle tight around his pulsing meat and drank down each shot as quick as it came out. Sydney's voluminous amounts of precum could never have prepared me for the real thing. Copious buckets of hot semen flooded my throat, and after three gushes, I was already full to bursting. My stomach, normally satisfied by nibbles, was now stretching well beyond capacity.

But Sydney didn't stop. His cock blasted me five more times, and I thought I was going to faint. I couldn't pull off though. I just kept telling myself that the next one would be the last and if I could take it all, Sydney would want me to do it again and again.

Sydney squeezed his legs even tighter, and his heavy stomach kept shaking with his orgasm and bouncing against my head like a medicine ball. At times I felt completely encapsulated in his warm girth.

After what I think was the twelfth blast, the pressure eased up enough for me to catch my breath and guzzle the remaining loads with a little less effort. Sydney relaxed, but every one of my muscles seemed to be tight with tension. I kept my muzzle on his cock to catch a couple last weak streams. When I finally eased off, I was shaking. My arms couldn't hold my body up anymore; I just collapsed against my brother. My stomach was rock hard and bloated noticeably. I could see the swell beneath my shaggy brown fur, and I rubbed it with careful paws. I could tell Sydney's gut was also bigger and firmer. As I laid my head on his thigh, I looked up at the huge expanse, like a big fat globe pinning the rat in place with its weight.

I smacked my lips, finally able to appreciate the taste of my brother's cum. It was thick and sweet and made me smile. Before his cock retracted to its sheath, I even lapped it clean. With my arms loosely crossed above the small arc of my stomach, I fell asleep, listening to the sounds of lazy sucking. Even Joni had fallen silent as Sydney continued to drain her breasts of warm, sweet milk.