Jason holds completely still as his dad stares right back at him for a few, very uncomfortable moments. His dad spoke up in a loud voice as he pulls Kimmy off of his length. Jason’s member throbs hard as cum spills out of her.

“Kimmy stay here…” Jason scrambles as his dad quickly moves out of view; sprinting over to his door. He managed to get out of his door and his paw was on the front door handle as he felt a paw grab his shoulder and roughly turn him around. His heart pounding painfully hard in his chest as he opened his mouth to try and make an excuse; all that escaped his lips though was a yelp as he was picked up under his arms and pinned back against the front door.

“Get a nice eye-full, you little voyeur?!” His dad growls, his muzzle right next to his.
“I..uh….you see….uh…i wasn’t” Jason lets out a yelp as his father’s grip tightens, his nails lightly digging in, only a brief moment later he lets him go. Before he got a chance to say anything, Jason’s father puts a paw behind his back and roughly shoves him down the hallway.
“Go.” He says sternly, motioning to his room where Kimmy was. Jason meekly walks forward, blushing hard as she came into view. She lets out a pleasured moan as her paw rubs her messy slit, through half-lidded eyes she looks over at him before quickly opening them and sitting up. 
“J...Jay?!” she panics a little before her father steps behind Jason and shoves him forward again. 
“Kimmy stay there. Your brother, it seems, would like some quality time with you.” Kimmy scrunches up her nose as she looks down and notices her brother’s throbbing, cum coated cock. She looks between the two of them rapidly as she tried to process what was happening. 
“Go on ‘Jay’, fuck your little sister. Its obvious you want to.” With that his father gives him another rough shove, pushing him onto the bed. Breathing hard as he hovers over Kimmy. Jason swallows hard. 
“D….Daddy?” Kimmy looks at her father uncertainly as Jason shakily lines up his tip to her slit. Their father walks over, kneeling over the two of them and pushes Jason forward. Jason lets out a groan as his member sinks into his half sister, echoed by her moan. Eagerly Jason starts to pull back his hips to thrust only to be held in place.
“Hush darling, I need to give your brother his punishment for spying on us.” Jason’s eyes go wide as he just now realizes his father’s own tip was pressing up under his tail. With a grunt their father presses it into his tailhole. Jason opens his muzzle, about to let out a scream before it was clamped shut by their father’s paw. 
“Jeeze, both you and your sister are noisy.” Jason whines as his father’s grip tightens as he forces his length further and further in. Jason’s eyes roll up into his head as his father presses down into him; forcing his own knot to pop into his sister’s messy pussy. She lets out a loud happy moan as she wraps her legs around her Jason. Their father growls as Kimmy proves what he just said, before starting to pound hard into Jason. 
“Damn….” Their father says in admiration. His son’s tunnel tightly squeezing his length. He sharply inhales before pulling his hips back and slamming his weight down. His knot bouncing off of his rump with each thrust, refusing to go in. Jason lets out a muffled groan under the weight and pulls at the paw holding his muzzle shut. Their father uses his free paw to swat at Jason’s before doubling his efforts. Jason’s groans turn into an elongated muffled moan as his cock throbs in his sister’s hot tunnel. After a few more thrusts his moan grows loud even through his father’s grip. Cumming hard into her as his father pounds away.  
“Cumming already lil’ pup?” Their father teases as Jason’s tailhole squeezes around his length over and over. Jason open his muzzle as his dad lets it go, a soft sigh escaping his lips.  “Guess I need to go faster then.” Jason opens his eyes wide as he feels his father’s paws grip his hips. His cock ramming even harder then before, the strength behind the thrusts forcing out breaths from both him and his sister under him. Kimmy stares up at the two of them with lidded eyes then slowly smiles as she focuses on her dad.
“Daddy is going to knot you” She giggles and says with a confident voice. 
“He...wha..” Jason sharply looks down at Kimmy before quickly looking back, seeing his father’s massive knot slamming hard into him one last time, the pain didn’t register in his head as he watched it disappear into his backside. Their father groans as his cock starts to unload his seed deep inside of his tailhole. He looked down and smiles as he could still see part of his knot that is sealing his seed inside of him. With a big sigh he collapses down over the two of them panting heavily. Jason lets out a huff as he could feel each wave of hot seed spilling inside of him. 
“What do you say we have a talk with your mom about staying over here more?” Their father grins as Kimmy perked up.
“Really?!” her tail wagging hard into the bed. “Jay can play more then?”
“Yes, unless the little voyeur would like to just watch that is.” he smirks at Jason before he plants a kiss on Kimmy’s forehead.
“I…yeah…” Jason pants heavily under the weight of his father “...lets talk to mom”