thinking ab dennis and dad!robby and uncle!jack,,,,,
- @puppydogdennis
cw incest, uncle/nephew, dad/son, secret relationship, voyeurism
read below or on ao3!
Robby never really understood why his brother Jack and his son Dennis loved going camping so much. They’d been doing it almost every weekend since Dennis graduated, but he just couldn’t imagine what they found so entertaining out there.
Fishing he understood. Calm, quiet, sitting by a river. Enjoying contemplation or conversation with fresh food at the end.
But they never took any fishing gear when they went out. Just a tent and a couple sleeping bags with enough food and water for the weekend.
Robby wasn’t usually home when Jack came over to pick up Dennis, but he’d swapped shifts with Shen and happened to have this Friday off.
So when Jack pulled up and Dennis ran down to meet him, Robby saw everything from his bedroom window.
His son and his brother greeted each other by the car with big smiles and a warm, lingering hug. Then, his brother glanced around, and with a sly smile he backed Dennis up into the shadow of the front door, out of view from the street.
Robby had to shift a little to see around the roof line of the house, but when he caught sight of them again, he froze.
His brother had his son pressed back against the side of the house. Jack’s head was buried in the curve of Dennis’s neck and Dennis’s hands were twisted in Jack’s hair. His son’s face was soft, with a faint smile and closed eyes, as his head tipped back against the side of the house.
It was then that Robby noticed his brother was lifting him up slightly, with both hands clenched around his son’s ass as his brother ground his hips forward, pinning Dennis between himself and the house.
Jack must have said something then because Dennis laughed, easy and familiar. Then Jack pulled back to let their mouths find each other and–
Robby froze again as his son’s eyes caught his through the window. They were wide, but not afraid. Only… surprised. And searching.
Whatever Dennis saw in his dad’s face must have pleased him. His eyes crinkled with a smile and his hands twisted harder in his uncle’s curls. Then one leg hitched up around Jack’s hips and urged them closer.
Robby’s brother bucked forward as he kissed his nephew, first his mouth, then his jaw, then down again to his neck. Dennis kept his eyes on his dad the whole time, staring with equal parts curiosity and arousal.
Only when Jack finally pulled away did Dennis’s eyes leave his dad's. Robby’s son smiled giddily at his uncle, kissed him once softly, then let his hands slide down and off Jack’s body as they sauntered under the eve of the roof and made their way to the front door.
Robby’s heart was pounding in his chest. He couldn’t move. He couldn’t think.
He winced suddenly, and glanced down to find his hands were wrapped like vices around the windowsill, knuckles white and bulging.
Then, his eyes drifted closer to his body, and a wave of shame washed over him when he saw the small, dark spot on the front of his jeans.
He quickly reached inside his pants and adjusted himself, glancing around as he hid his arousal away despite being alone in his room.
Soon, Jack and Dennis would leave. They would venture out into the wilderness to enjoy 48-odd hours of solitary togetherness.
While Robby would be alone in the house once again.
He glanced down and realized suddenly that his hand was still inside his pants. Still wrapped firmly around his hard, aching arousal.
Robby closed his eyes and squeezed himself once. The image of his son wrapped around his brother’s body as his uncle rut his hips against him was burned behind Robby’s eyes like an after image. He could see it everywhere he looked, and especially when he closed his eyes.
He squeezed himself again as he watched his brother and his son walk out to the car. Their eyes and hands lingered on each other hungrily, and Robby could only imagine what they would do together when the watchful eye of the world was no longer on them.
As they settled into the car, Robby locked eyes with his son once again. Without a thought, he began fisting himself roughly, letting his arm flex freely in his reflection in the window.
Dennis smiled up at his dad as his uncle turned the ignition. Robby's hand quickened as he watched as his son reach over and expertly unfasten his brother’s pants. Then, Dennis kept his eyes fixed on his dad as he leaned over, mouth first into his uncle's lap and–
“Ah–! Fuck! Fuck!”
Robby's view from the window became suddenly opaque as he twitched and shuddered into his own hand.
When he finally regained his composure again, his brother’s car had already disappeared from the driveway and he was all alone again.
Robby braced himself against the window frame, panting hard.
He knew at that moment, as he stared at the cooling results of his shame dripping down the window, that he was going to have a very, very long weekend.
_________
thanks for reading!! also available on my ao3!