The house was quiet when Mark got home late from the bar, the only light coming from the living room lamp. His son, Jake, twenty-three and home from college for the summer, sat on the couch in nothing but boxers, scrolling on his phone. Jake looked up, surprised. "Dad, you're back early."
Mark didn't answer with words. He crossed the room in three strides, grabbed Jake by the hair, and yanked him to his feet. "You think you can walk around here half-naked and not expect me to do something about it?" His voice was low, rough, the same tone he'd used when Jake was a kid and needed discipline. Only now the discipline was different.
Jake tried to pull away. "What the fuck, Dad? Let go."
Mark's free hand slapped across Jake's face, hard enough to sting. "Shut your mouth. You've been teasing me for weeks with those shorts, those looks. Tonight you're going to take what you've been asking for." He shoved Jake face-down over the arm of the couch. The boxers came down in one yank, exposing smooth, firm ass cheeks. Jake struggled, kicking, but Mark was bigger, stronger, and years of suppressed hunger made him relentless.
He spat into his palm and rubbed the saliva over his own thick cock, already hard and leaking. "This is happening, boy. Fight all you want. It just makes my dick harder." Jake's protests turned into a muffled yell as Mark pressed the head against his tight hole and pushed. The ring resisted, then gave with a burning stretch. Jake's body jerked, trying to crawl forward, but Mark's hands pinned his hips and drove in deeper, inch by inch, until he was buried to the balls in his son's ass.
"Fuck, you're tight," Mark growled, pulling back and slamming forward again. Each thrust was brutal, skin slapping skin, the couch creaking under them. Jake's hands clawed at the cushions, his voice breaking between curses and involuntary moans. "Dad… stop… it hurts…" Mark leaned over him, chest to back, biting the nape of his neck. "You don't get to tell me no. You're mine. Always have been."
He reached under Jake and found his cock half-hard despite the pain. Mark stroked it roughly in time with his thrusts, forcing it to full stiffness. "See? Your body knows who owns it." The pace quickened, sweat dripping from Mark's forehead onto Jake's spine. Every thrust bottomed out, grinding against the prostate until Jake's protests turned into broken gasps. Mark's hand left red marks on Jake's hips as he held him in place, using him like a sleeve.
When Mark came, it was with a guttural groan, flooding Jake's insides with hot pulses. He stayed buried deep, breathing hard, until the last spurt. Then he pulled out slowly, watching his cum leak from the stretched hole. Jake lay limp over the couch arm, shaking, but his own cock twitched untouched.
Mark flipped him over, pushed him onto his back on the floor, and straddled his chest. "Open." Jake hesitated, then parted his lips. Mark fed his softening cock into his son's mouth, making him clean it with his tongue. "Good boy. Swallow every drop." When he pulled free, he reached down and finished Jake with a few rough strokes, watching the younger man's cum spurt across his own stomach.
Later, Mark pulled Jake into his lap on the couch, arms locked around him. "This isn't over," he said quietly, voice still dark.
"Every night you're here, you're mine to use. Understand?" Jake nodded, breathing unsteady, the mix of pain, shame, and reluctant heat settling deep. Mark kissed the side of his neck, almost tender now that the edge had been taken off. "That's my son."
The rest of the summer unfolded in the same pattern: sudden takings in the kitchen, the shower, the garage. Jake stopped fighting after the first week, his body learning to open faster, to come harder under his father's weight. Mark never asked for permission again. He simply took, and Jake learned to give. By the end of August, the word "Daddy" left Jake's mouth with a different kind of heat, one that made Mark smile before he bent him over again.
