The summer heat clung to the leather seats of the old station wagon as it hummed along the highway. James, tall and broad-shouldered at six-foot-three, glanced sideways at Harry in the dim glow of passing streetlights. Harry, lean with narrow hips that belied his prominent, rounded ass, shifted uncomfortably on the back seat. Their father drove up front, humming along to the radio, oblivious—or so they hoped. At twenty-two and twenty-one respectively, both fully adult, the tension between them had simmered for months.
"You keep staring like that and Dad's gonna notice," Harry whispered, his voice sharp with wit. "Or are you just admiring how these jeans barely contain me?"
James smirked, leaning closer. "Hard not to, with an ass like that. Size difference has its perks—my hands could span your hips twice over." Their banter crackled, each quip layering on the heat. Harry rolled his eyes but didn't pull away, his cheeks flushing.
The car hit a bump, jolting them nearer. James's thigh pressed against Harry's, and the contact ignited something primal. "You're horny already, aren't you?" James teased quietly. "I can feel the heat radiating off you."
"Says the guy whose cock is probably straining against his pants right now," Harry shot back, grinning. "Keep it down, or this ride gets awkward fast." Yet his hand brushed James's lap, testing boundaries as the miles stretched on.
Sweating from the summer air and building desire, they exchanged more barbs. "Big talk for someone with such a tight little frame," James murmured. Harry countered, "At least I know how to use what I've got—unlike some giants who fumble." The dialogue fueled their arousal, turning the confined space electric.
Unable to resist, James slid his hand under Harry's shirt, fingers tracing skin. Harry gasped softly but stayed strong, guiding the touch lower. "If we're doing this, do it right—no half-measures." Clothes shifted discreetly; James freed his hard cock, while Harry exposed his ass, the curves inviting in the shadows.
Harry leaned in for a quick blowjob, lips wrapping around James's shaft with skillful suction, tongue swirling as he maintained eye contact. "Tastes better than I imagined," he quipped between strokes. James panted, gripping the seat. The risk of their father turning around heightened every sensation.
Switching positions carefully, James entered Harry from behind on the back seat, his cock sliding into the tight heat. Harry's pussy—wait, no, his ass clenched around him, wet with anticipation and dripping as they moved. They fucked slowly at first, building rhythm, bodies sweating and panting in sync. "God, your big ass feels perfect around my cock," James groaned. Harry replied wittily, "And your size difference hits all the right spots—don't you dare come too soon."
The climax hit hard; James came deep inside, cum filling Harry as they both shuddered through orgasm, muffling moans. Panting, they straightened just as their father cleared his throat up front.
"That was risky as hell," Harry whispered with a sly smile, already plotting more. "But the story's just getting started—next stop, who knows what we'll try?"
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