He was built like a fucking tank, the kind of muscle dad who looked like he could bench press your car and still have energy left to plow ass all night. I first spotted him at the gym on a rainy Tuesday, his gray tank top soaked through, veins popping on those thick forearms as he slammed through another set of deadlifts. I was twenty-eight, lean and hungry, and I couldn't stop staring at the way his shorts hugged that heavy bulge. He caught me looking, grinned with that cocky dad smirk, and nodded me over.
"Spot me, kid," he growled, voice low and rough like gravel. I stepped in, hands under the bar, close enough to smell his sweat and cologne. His name was Rick, forty-seven, divorced, with two grown sons who never visited. He lived alone in a big house on the edge of town. After the set he wiped his face and said, "You look like you need a real workout. My place. Now."
We barely made it through his front door before he shoved me against the wall. His massive chest pressed into mine, hard nipples scraping through the fabric. "You want this muscle daddy cock, don't you?" he muttered, grinding his thick erection against my thigh. I nodded, already hard as steel. He yanked my shirt off and attacked my neck, biting and sucking while his callused hands squeezed my ass like he owned it.
"Get on your knees," he ordered. I dropped fast. He peeled down his shorts and that fat dad dick sprang free, veiny, uncut, and already leaking. It had to be nine inches, heavy balls hanging low beneath it. I opened wide and he fed it to me, one hand gripping the back of my head, pushing until my nose hit his trimmed pubes. "Suck it like you mean it," he grunted, thrusting shallow at first then deeper. Spit ran down my chin as I gagged and slurped, tasting salt and musk. He flexed his biceps while I worked him, showing off the thick muscle that made my own cock twitch untouched.
Rick pulled me up, spun me around, and bent me over the kitchen table. He ripped my shorts down and spread my cheeks, spitting right on my hole. "Tight little fucker," he said, rubbing the head of his cock against me. One hard push and he sank halfway in. I groaned loud, the burn mixing with pure heat as he stretched me open. He didn't wait, just started pounding, hips slapping my ass with every thrust. His heavy balls swung and smacked me. "Take daddy's cock," he barked, one hand pinning my neck, the other reaching around to jerk me rough and fast.
We moved to the living room floor after that. He lay back on the rug, all that muscle glistening, and pulled me on top. I rode him reverse, watching his thick shaft disappear into me again and again. He slapped my cheeks hard, leaving red handprints. "Faster, boy," he demanded. I bounced harder, sweat dripping, his hands gripping my hips so tight they'd bruise. He sat up suddenly, wrapped those huge arms around me, and flipped us so he was on top again, driving in balls-deep while he kissed me messy and deep.
When he flipped me onto my back I knew he was close. He hooked my legs over his shoulders and fucked like a machine, abs flexing, pecs bouncing with every slam. "Gonna fill that ass," he warned, voice ragged. I stroked myself in time with his thrusts until I shot first, ropes hitting my own chest and his abs. That pushed him over. He buried himself to the hilt and unloaded, hot pulses flooding me while he growled my name and kept grinding through it.
We stayed locked together afterward, his heavy body pinning me down, both of us breathing hard. He pulled out slow, watching his cum leak from my hole, then scooped some up and fed it to me on his fingers. "Good boy," he said, voice softer now but still filthy. We showered together, soaping each other's bodies, his hands exploring every inch until he was hard again. Round two was slower but just as raw, him taking me against the tile until we both came once more.
Later we sat on his couch naked, drinking beer.

Rick pulled me against his chest, one thick arm around my shoulders. "Come back tomorrow," he said. I already knew I would. That muscle dad had me hooked on his cock and his strength, and I wasn't going anywhere.