Brother's Irresistible Bigger Cock

The apartment still held the heat of the walk home. Stefan, twenty-eight, an accountant who spent his weekdays locked to a spreadsheet, stood by the couch in damp socks and tried to remember how to breathe. His step-brother Franklin, twenty-two, was already stripping in the middle of the living room the way he always did after the gym, shirt on the floor, shorts shoved down, no towel, no warning.

Franklin's cock fell forward, thick and heavy, the shaft so dense it barely swayed before it settled against his thigh. The head was broad and blunt, the skin a deep flush, the balls hanging full and low beneath it. Soft, and still visibly, stupidly larger than Stefan's own. Stefan's mouth watered. He swallowed and it didn't help. Inside his compression shorts his smaller dick twitched, a sharp unwanted pulse that made his stomach clench and his face go hot.

They had shared the place since their parents divorced years ago. Stefan's father, Franklin's mother, a marriage that had ended before either of them signed the lease and had never made them blood. Step-brothers. Roommates. Stefan had been telling himself that for months while Franklin changed in the open, careless, that heavy cock on display like size was just weather. Tonight the lie wouldn't hold. Stefan stared at the thickness, at the weight of it, at the way it dragged when Franklin turned toward the kitchen. His tongue pressed the roof of his mouth. A wet spot spread against the front of his shorts. His smaller cock jumped again, leaking, aching, ridiculous next to what his step-brother carried around without thinking.

His hands stayed fists at his sides. He could feel every inch of his own cock, smaller, harder than it had any right to be, twitching against the damp fabric while he memorized the hang of Franklin's. The comparison sat in his throat like a stone. He wanted his mouth on that thick, heavy length and he knew it, and the wanting made his smaller dick jump one more time, mean and helpless. Franklin scratched his stomach. The heavy cock shifted. Stefan didn't blink.

Franklin looked up from the water bottle and caught him. Not a glance. A full stop. His eyes dropped to the wet spot on Stefan's shorts, then climbed back to Stefan's face, and something slow crossed his mouth.

"You staring at my cock?"

Stefan's throat locked. "No."

"You've been staring since I dropped my shorts." Franklin didn't cover himself. He stepped closer, bare, that thick length swinging with the motion, and Stefan's smaller dick jumped so hard he felt it in his knees. "Thing's been twitching every time you look. Don't lie to me."

"I'm not—" The word broke. Stefan dragged his eyes up and they fell straight back down. Franklin's cock was close enough now that Stefan could see a vein thickening along the underside as it started to wake. His mouth flooded. Heat crawled his neck. "Franklin. Don't."

"Don't what?" Franklin's hand closed around his own shaft and he gave it one slow stroke. It thickened in his fist, the head flaring, already bigger soft than Stefan was hard, and the sight made Stefan's breath stutter out of him. Franklin stroked again, root to tip, showing the weight of it. "Ask you if my bigger penis is turning my older step-brother on? Because it is. Look at you."

Stefan shook his head. It was a lie and the shake was weak and they both heard it. His smaller cock throbbed, leaking steadily into the shorts, and his hands had come unfisted without his permission. Franklin kept stroking, lazy and sure, and the massive shaft filled, longer, thicker, obscene in the small room, the head glossy where his thumb passed over it. Stefan stared. His mouth watered so badly he had to wipe his lip with the back of his hand.

"I can't stop looking at it," he said, hoarse, the denial dead. "I've been trying for months. I can't. It's so much bigger than mine I don't even know what to do with my hands when I see it. I think about it. I think about your cock when you're not even here. I get hard in my office like an idiot because I remember how it hangs."

Franklin's grin went sharp and hungry. He stepped in until Stefan could smell gym soap and warm skin, until that heavy cock was a handspan from Stefan's stomach. "Yeah?" His fist worked the shaft, slow, deliberate, putting it on display. "Good. Because I've been watching you watch me. I've wanted your mouth on this since the first time you went red and couldn't look away. Mutual, Stefan. I want you. I want you on it." He stroked from the thick root to the broad head and held it out, heavy in his grip, visibly bigger than anything Stefan had. "Touch it. You want to. So touch it."

Stefan dropped. His knees hit the rug before he decided to kneel, and both hands wrapped Franklin's massive shaft because one wasn't enough. The heat shocked him. The weight. Thick enough that his fingers didn't meet, heavy enough that holding it made his own smaller dick jump and leak like it was answering. He stared at the broad head, wet at the slit, and his mouth opened on a sound he didn't mean to make.

"Fuck," Franklin said, low. "Look at you."

Stefan leaned in and licked. One long stripe from the heavy balls up the underside to the head, tasting salt and skin, and then he did it again because the first pass wasn't enough. He mouthed the head, lips stretching around the flare, tongue working the slit, and Franklin's hand settled in his hair, not forcing, just there. Stefan took more. His jaw ached almost at once. The thickness filled his mouth, crowded his tongue, and he moaned around it, hungry, sloppy, spit already slicking his chin. He sucked and licked every inch he could reach, hands working what his mouth couldn't, worshipping that superior cock with his lips and his tongue and the wet sounds he couldn't stop.

Franklin groaned. "That's it. Older step-brother on his knees for it. You love how much bigger it is. I can feel you drooling."

Stefan pulled off just long enough to gasp yes and went back down, taking the thick shaft deeper, choking a little, loving the choke, nose pressed toward the base he still couldn't reach. He licked the heavy balls, sucked them one at a time, then dragged his tongue back up and swallowed the head again, bobbing, messy, devoted. His own cock throbbed untouched in his shorts, smaller, leaking, irrelevant. All he wanted was more of Franklin.

Franklin hauled him up by the hair, firm, and Stefan went willingly. "Couch. Bend over. I want that ass."

"Yes," Stefan said, already shoving his shorts down. His smaller dick sprang free, flushed and wet, and he didn't care how it looked next to what he'd just had in his mouth. He bent over the arm of the couch, chest down, ass up, and reached back to spread himself. "Please. Put it in. I want your cock. I want the bigger one inside me."

Franklin spit into his hand, worked two fingers into Stefan's hole, and Stefan pushed back onto them with a broken noise, opening, greedy. The fingers weren't enough. Nothing would be enough except the cock he'd been staring at all evening. Franklin lined the broad head up and pressed. The stretch burned, thick and relentless, and Stefan's mouth fell open against the cushion.

"Oh fuck, Franklin."

"Breathe," Franklin said, and kept pushing, inch by thick inch, until the massive shaft was seated deep and Stefan was shaking under him, stuffed fuller than he had ever been. "There. Feel that? That's my cock. Bigger than yours. All the way in your ass."

He pulled back and slammed in. Stefan cried out, the sound filthy, and grabbed the couch. Franklin fucked him hard in long driving strokes, doggy-style, hips cracking against Stefan's ass, the thicker length stretching him open on every thrust. Stefan moaned into the cushion, pushing back, taking it, babbling.

"It's so much bigger," he gasped. "Fuck, your cock, your bigger penis, it's stretching me, I can feel every inch, it's owning my ass, Franklin, don't stop."

"Say it again." Franklin pounded him, relentless, one hand on Stefan's hip, the other shoving his face into the cushion. "Tell me whose cock feels better."

"Yours," Stefan sobbed, wrecked and loving it. "Your bigger penis. My younger step-brother's cock feels so much better, stretching me, owning the older brother's ass, splitting me open. I want it. I want you to own me with it."

Franklin fucked him through it, hard and deep, the wet sound of it filling the apartment, Stefan's smaller dick swinging beneath him and dripping onto the rug. Then Franklin pulled out, flipped him, and shoved him onto his back on the cushions. Stefan's legs went up and open without being asked. Franklin pinned his wrists above his head, lined the thicker length up, and sank it back in to the root.

Stefan's eyes rolled. "Yes. Yes. Fuck me."

Franklin pinned him harder and pounded, relentless, the couch creaking, Stefan's body jolting with every thrust. The angle drove that massive cock deep, stretching him, owning him, and Stefan couldn't stop moaning about it, voice breaking, filthy and honest.

"Better," he panted, staring up at his step-brother. "Your bigger penis feels so much better inside me. It's stretching my ass, it's owning it, I can feel how much thicker you are, Franklin, don't you dare go easy."

"I'm not going easy on you." Franklin drove in harder, pinning him, sweat dripping onto Stefan's chest. "This ass is taking my cock. Older step-brother bent open on the younger one's bigger dick. You love it. Look how you're clenching around me."

"God, it feels better," Franklin groaned, pounding. "Younger step-brother's bigger penis stretching and owning the older brother's ass. Nothing feels like this."

"I love it," Stefan moaned. "I love your cock. Bigger than mine. Better than mine. Fuck me with it. Own my hole."

Franklin's rhythm broke. He slammed in deep and stayed there, groaning, and Stefan felt the first hot pulse flood him, then another, a massive creampie pumping into his ass, thick and endless, Franklin's bigger cock jerking as he filled him. The heat of it, the stretch, the sheer volume of his step-brother's cum, and Stefan came untouched. His smaller dick spurted between them, stripe after stripe across his stomach, his hole clenching around the cock still buried in him, wringing Franklin dry while he shook and moaned and never touched himself once.

They lay tangled on the couch, Franklin still inside him, and Stefan kissed him once, soft and breathless, cum slick between their stomachs. Then the softness was gone.

"From now on," Stefan said, voice wrecked, "my mouth and my ass belong to your irresistible bigger cock whenever you want them. You pull that thing out and I get on it. I suck it. I bend over and you fuck me open with it."

Franklin ground deeper, pushing more of the creampie out around the thick shaft, and Stefan groaned, hole fluttering, still hungry. "Leave it in and get hard again so you can pump another load into my sloppy used ass, because your bigger cock owns this hole and I want it flooded until it drips down my balls."