The family SUV rumbled along the endless stretch of highway as the sun dipped low, casting golden hues over the rolling hills. In the backseat, eighteen-year-old Dennis shifted uncomfortably, still feeling like a kid despite his recent birthday. He sat crammed beside his older sister, Emily, who dozed fitfully against the window. Up front, their parents chatted about the Grand Canyon ahead, but Emily's complaints of motion sickness had grown steadily worse over the last hour. Finally, their father swerved to the shoulder, tires crunching on gravel, and Emily bolted out just in time to vomit onto the roadside grass.
Thankfully, the mess stayed outside the vehicle. Their mother, wearing her favorite loose-neckline travel top—a soft, flowing garment that hugged her curves—hopped out to help. She rubbed Emily's back and murmured comforts while the girl bent over, retching miserably. Dennis tried to look away, but his gaze locked onto his mother as she leaned down. Her full breasts swung freely beneath the thin fabric, the deep V-neck gaping to reveal the soft, pale swells, dark areolas, and impossibly long, fat nipples that hardened slightly in the breeze. His cock twitched instantly, swelling against the soft fabric of his sweatpants.
Dennis was no Adonis—fit enough from occasional runs, decent-looking with an easy smile—but his size downstairs had always been his secret. Close to a foot long when hard and thick as a wrist, it was impossible to hide. Girlfriends had begged for it; guys in the locker room had teased him since high school. Soft, it peeked out the leg of shorts; hard, it tented everything. Right now, in these loose sweats, concealment was hopeless.
Their mother straightened, wiped Emily's face with a tissue, and decided to switch places. The big open window up front might help with the nausea, she explained. Emily slumped into the passenger seat while their mother slid into the back beside Dennis. Her thigh brushed his as she settled in. He crossed his legs, trying to play it cool, but he knew the precise moment she noticed the growing bulge. Her eyes flicked down, then up to his face with a sly, side-eyed grin before she turned to stare out her window, cheeks flushing faintly. Embarrassed heat crept up Dennis's neck. He stared at the blurring landscape, willing his erection to subside, but it throbbed insistently, the image of her nipples seared into his mind.
The SUV hummed onward. Their father fiddled with the radio while Emily nodded off from exhaustion. Their mother shifted slightly, her light floral perfume wafting over Dennis. Innocent thoughts flickered through her mind at first, but betrayal soon crept in. He was all grown up now. That bulge was impossible to ignore. She shouldn't look, yet it strained right there—so tempting. Just a glance. No harm. God, it looked big. Bigger than she had ever imagined. What would it feel like under her hand? She pushed the thought away—he was her son—but he was eighteen, a man. And that outline...
Her hand moved first, resting casually on the seat between them. Minutes passed with only road noise. She adjusted her position, fingers brushing his knee as if stretching. The thoughts deepened. He wasn't pulling away. Warmth radiated from him. Just a little closer. No one was watching. Emily slept; their father focused ahead. It was wrong, but she couldn't stop wondering. How hard was it? How thick? One touch, just to satisfy the curiosity.
Slowly, her palm slid up his thigh, inch by inch, her breath growing shallower. She paused at the hem of his sweats, then ventured further. Fingertips grazed the swelling shaft through the fabric. It was massive, pulsing already. She shouldn't, but she needed more. She stroked lightly, pretending it could pass for an accident.
Her hand flattened, tracing the outline tentatively—up the length, feeling veins thrum beneath, down to the base, then back to the flared head. Dennis stayed still, heart racing, letting it happen. Her mind raced. So long, so girthy. Her fingers barely wrapped around it. It was making her wet, imagining it stretching her. She pumped slower, building the heat. He liked it—look at that twitch.
Her strokes grew bolder. She wrapped as much as she could and slid rhythmically along the full shaft. Precum dampened the fabric. She dipped her fingers under the waistband, skin on skin now, gripping the hot, bare flesh. Velvet over steel. So much precum—slick, warm. She wanted to taste it, but not yet. Just stroke, feel every ridge.
Their father's voice cut through. "Pit stop up ahead for lunch, folks. Everyone hungry?" She pulled back smoothly and answered casually, "Sounds good." Dennis was wrecked—cock rock-hard, tenting obscenely. He grabbed a second pair of underwear from his bag, mumbled about the bathroom, and hurried inside the diner-gas station combo. In the stall, he layered up to pin the monster down. Partial relief.
Lunch was burgers and fries in a greasy booth. Their father droned on about the canyon's red rocks, scenic overlooks, and hiking trails. Emily picked at her food, still queasy. Their mother smiled across the table, all innocence, but her foot nudged Dennis's beneath it—a secret spark. All he could think about was her hand on his cock, the way it had pulsed under her grip, how close she had come to making him explode.
Back on the road, their mother announced she would stay in the back for a nap. Dennis excused himself one last time, this time ripping off all the underwear and letting himself hang free under the sweats. Why not? She wanted it. Not long after they pulled out, her head lolled onto his shoulder, "sleeping." Her hand crept back, even slower now, teasing the buildup. He was bare under there. No barriers. That huge cock just waiting. She was aching for it—slowly now, make it last.
She traced lazy circles on his thigh first, then up, palming the shaft gently before wrapping her fingers around it and stroking with deliberate slowness—up the veiny underside, over the sensitive head, back down to squeeze the base. Precum oozed freely, lubing her palm as she jerked him off in the backseat, her breathing shallow. So fucking big. She could ride this, feel it fill her completely. But here? She needed more. Lay her head down, get closer.
She shifted, her head dropping into his lap, face inches from the exposed length she had pulled free. Up close it was thick, throbbing, too massive to take all in. But she could lick it, stroke it, make him cum hard.
Emily stirred up front and glanced back with sleepy eyes. Instead of shock, her gaze locked on the scene—Dennis's enormous cock glistening in their mother's hand, being stroked and licked. Holy shit, Mom's got her hand on that monster? It's enormous—way thicker than anything. Watching her stroke it, lick the head... fuck, that's hot. Her heart raced; she shouldn't stare, but it turned her on so much. Imagine feeling that stretch her. Go Mom, make him explode!
Their father hummed along to the radio, oblivious, eyes on the road. Their mother's tongue flicked out, lapping at the precum-smeared head, swirling around the tip while her hand pumped the shaft—graphic and wet, saliva mixing with the slickness as she licked along the veiny length and sucked gently on what she could fit without gagging. It tasted incredible—salty, musky. Too big to swallow whole, but she could work it like this. Stroke faster, lick harder, build him up.
Emboldened, Dennis slid his hand under her loose top, cupping one heavy breast. His fingers found those long, fat nipples and tweaked them—pinching, rolling between thumb and forefinger, feeling them harden like pebbles. She moaned softly around his cock, her strokes faltering for a second. Those tweaks sent shocks straight to her pussy. Harder—make her drip while she made him cum.
Emily watched wide-eyed, one hand slipping between her thighs, rubbing herself discreetly. He's playing with her nipples now? Those huge tits... this is wild. So exciting—she wanted in, wanted to feel that cock pulse. Cum for her, fill her mouth!
Dennis gripped her breast tighter, tweaking relentlessly as the pressure built, balls tightening. Their mother stroked faster, tongue lashing the head, and he erupted—thick ropes of cum jetting out, hot and endless. She caught it all in her mouth, swallowing greedily, every creamy drop, no spill. Thick, warm evidence gone. Perfect.
She pulled off with a soft lick and sat up like nothing had happened, her nipples still poking against her top. Emily turned back, flushed and grinning secretly. Their father announced the next exit, none the wiser. The SUV rolled on, the air thick with their shared secret.
The Roadside Temptation
