It's normal for a father to sprout up a boner right next to his son. Even if he may not be immediately thinking it, daddy's mind is on smashing his boy's hole and taking the kid's virginity once and for all. His son, Zach, is now at the age where he's well aware of dick and what it's capable of. The teenager can attest: what would round out a day of school better than jerking off to big-dicked, handsome manly men on the Internet like your life depends on it? 
What he didn't expect, however, was his father to be so fucking thick. A proud 9-inch spire of pure, uncircumcised daddy dick, jutting up between his father's thick thighs, and adorned with gruff pink pube fluff to boot.
Hell, even daddy's big fat milker balls have wisps of pube hair on them. 
("Dude's so manly that even his balls sprout a bit of hair... Yep, that's my father alright...") Zach thought to himself, instantly noticing the straining boner in his pants. Stupid sexy DILF... 
His father always has a habit of doing this to him. Just by his mere existence alone, Zach would get hard at a moment's notice around his dad. This is partly due to hormones, as you can reasonably expect, but it doesn't help that, in his spare time, Zach is slowly building a collection of filthy father x son stories that would make even the kinkiest of man blown away (quite literally). He was always curious, especially as a cub. Now he's a young teenage boy; he's been exposed to the other side of men on the Internet, and he would very much love to be between a man's legs right now, milking them dry. But, if his father has anything to say about it, his old man will be the one teaching him about cock instead. Porn can only go so far. Some horny sons get to experience the real thing.
His father, Crome.
The fuckin' breeder dragon that's mostly likely well known for making women the world over weak in the knees, often sending many sluts home unable to walk. Now Zach gets it: the reason for his existence. As the young son gazes upon his father's unimaginable girth, an idea strikes him.
("What's wrong with a bit of groping here and there?") He reasons in his mind, justifying his need to touch his father. But there should be no reason needed, as all men love it when curious boys touch them!
Judging by his loud snoring, daddy dragon (as Zach affectionately nicknamed him as a cub before) is fast asleep. Especially with a boner as prominent as that, I don't think Crome would mind to have his son's hand wrapped around his meat, playing with it like a new toy. Because, well, it is. But instead of playing, Zach would be more interested in replicating the handjob videos he's seen on YiffHub.
Crome is probably dreaming about getting a handjob from his son at this instant, because he is also a pervert - just like his. It runs in the family.
("Fuck it. Time to grab it. It looks so fucking good.")
And that's exactly what Zach did, never moving from his place, just reaching over to wrap his tender hand around his father's fat dick. Crome's dick is so girthy, that his kid's hand can barely wrap around it! The base of his father's shaft seemed to be the toughest, absolutely rock solid, and the fact that he was resting his hand on his father's pubic hair made it all the hotter for the son. He knows he's touching a man. Zach isn't even old enough to start growing extra fluff yet - most dragons don't get this trait until well into their adult years. But that's alright, because his smooth scales will function as the perfect contrast to daddy's naturally hairy, masculine form.
He could hear his dad snoring - so loud that he was sure it was vibrating the walls around him. But for all intents and purposes, the heartbeat in Zach's chest was louder. He's finally doing it. He's finally touching his father's cock; the self-same dick that he's seen swinging about between his thighs, enclosed only by grey sweatpants that Crome wears every morning - clearly getting them on in a hurry to see his son off to school with a mug in his hand.
Zach rarely makes eye contact with his father. Do you know why? It's because he's too busy looking at his big legs, and the just-as-big bulge protruding in the middle of them. As if he knew Zach would like it somehow, Crome would continue the conversation unabated, even putting a hand in his pocket to adjust his bulge, enjoying his son's exasperated, flustered reaction. The kid's old enough to know what cock is - he's way past that mark! In Crome's dirty fantasies, he would much rather be treating his son about the wonders of cock right now. Because he, too, harbours a deep lust for his own kin.
Just as the son's love for his father blossomed as he matured into his teenage years, as Zach grew from a cub and into a fit young lad, that's when Crome couldn't ignore the throbbing in his pants every time his son bent over to pick something up, taking his sweet ass time in front of daddy, while also making a point to perk up his big butt to said pervert. Crome was watching with a tightness in his loins...
So-called 'daddy dragon' just wants to cut the tension already and breed his son's inviting virgin hole then and there, but he knows that'll be classified as rape, and the kid's probably not ready to take his father's humongous dick just yet. But that's what Crome thought. As for Zach...? Well, the fact that he's pressing his nose against his father's throbbing shaft right now, his eyes widening at the trickle of precum flowing from his bulbous tip, into his thick curly bush that exudes his distinctive musk every waking second of every day, is proof enough that Zach is ready for his father.
Zach starts sliding his hand up his father's meat club, feeling the ridges beneath the veiny skin, hard as a bone. Then, he pulls down, seeing his father's foreskinned cock retract with another throb. More precum trickled from his tip, and this time Zach thought it prudent to push his finger against his dad's ridiculously sensitive tip and get a nice helping of precum on his finger. Without a moment to waste, he licked up the thick precum, it tasted very bitter, but with a surprisingly sweet aftertaste, almost like honey. Like a caveman discovering fire for the first time, Zach was ecstatic to taste his father's juice; the fruit coming from his loins.
Suddenly, his father's snoring stopped. However, as if controlled by an inner force beyond his will, Zach resumed stroking his off daddy because the big dragon didn't so much as move a muscle. That's good enough to know that he can continue doing this so long as he doesn't wake up.
Zach's lips were pursed together in deep concentration. He's got to do make daddy feel good!
Zach took hold of his much smaller (by comparison) cock and began himself beating off in time with the slow strokes on his father's cock. Every time he saw Crome's foreskin roll back and forth, he was in awe. 
("What is a man so handsome doing with a dick this big?") he thought, having to swallow the drool falling out of his mouth as his father's scent filled the air, slowly replacing the oxygen in the room. Little boy, small hands, big dick. Zach is literally just sat there whacking his father off, unable to stop. He knew he was doing a great job, since Crome's cock throbbed intensively and with far more frequency - so much so that Zach swore it could burst at any moment. It felt so big in his hands, so meaty and warm. 
Clearly, his father hadn't been giving his blessed manhood enough attention. It feels only right that his son picks up in his slack. Every time he stroked from the base to the tip of the dick, he could see his father's balls tighten and a growl escape from his throat.
"Are you enjoying that dream, daddy...?" Zach whispered, his soft tone barely registering in the room in fear of waking his father up. Crome's expression changed a bit: he was more focused, like he was snarling. A beast enjoying the pleasure of his son... Zach just assumed he was having a dream, nevertheless, he's far too transfixed on the stroking and throbbing of his own father's 9-inch meat pole (which takes up most of his peripheral vision) to think about the possibility of Crome being awake this entire time.
Zach felt a rush of adrenaline run through his body; knowing that he's stroking his father off and getting away with it. Zach shuffled closer to his father, and his dick twitched when he felt the warmth of his father's large thigh tickle against his. At this angle, it looks like Crome's pudgy belly takes up around 50% of Zach's body mass.
Now he's really in the zone - all that's left is to make the big man cum his guts out under the guise of having a wet dream.
Zach's internal monologue is telling him to make daddy feel good. Touch daddy's cock. Make the middle-aged man cum. Make him feel the pleasure of a kid's hands.
("My dad deserves the best...") Zach thought to himself, his expression darkening, rational thought escaping his mind in favour for unrepentant horny thoughts.
Suddenly, a familiar voice cut through his trance.
"You’re doing great son, but don't be afraid to be firm." Crome said, holding back a deep groan. Zack swivelled his head up to look at his father, who seemed to be awakening from a deep sleep – a groggy look on his face. Crome’s perverted smirk says everything he needs to know, though.
(“Daddy wants me to continue…”) Zach was overcome with joy but, at the same time, nervousness to perform. 
Crome doesn't want to come across as a degenerate pervert too early, but that’ll be a difficult when you’ve got your 14 year old son stroking you off with such earnest. Then, overcome with adrenaline himself (horny desire to be exact), Crome held his son's hand firmly onto his hip, the boy using his other hand to stroke that humongous shaft. He clasped his hand around his son, praising him. 
“Grip daddy’s big dong nice and hard, kid. Whack him off.” Crome grunted, his chest heaving with pleasure.
Zach was clearly struggling with just one hand, but daddy was getting such a kick out of it. Seeing that tiny hand, which can barely wrap around Crome's immeasurable girth, nevertheless stroke it, trying his very best to please his father's dong, it creates no doubt in Crome's mind: that sons were made to service their fathers.
"Sweetheart, have you seen a cock like this before?" Crome asked, like he's talking to a boy five years younger than 14. Zach shook his head, words unable to leave his throat.
Crome smirked.
("So my kid's seeing his first 'daddy dick' from his very father no less...")
He's had enough now; had enough of holding himself back. Crome exhaled sharply, demonic grunts coming out of his throat as he shoved Zack into his pube-infested balls, literally giving the boy nothing else to breathe other than his daddy's ball funk. But when Zack inhaled the said scent, he could easily make a life out of it. 
"Now that's the fuckin' good stuff..." Crome panted, tongue lolling out of his mouth as he forced the boy's face over his balls. He's finally living the fantasy.
"Now this is where you were made," Crome said resolutely, as if there was no arguing the fact. Zach's eyes rolled to the back of his head.
"When men jerk off or get a nice handjob," he continued.
"They get sweaty balls."
Crome drew his hand down to his plump jewels that stuck to his warm thighs, his cock about to explode at any moment.
("My kid's in front of me. My kid's in front of me. My kid's in front of me. Begging for cum.")
"'N it's up to you to service him," he explained, scratching his balls, a sharp, brush-like texture resounding in the room. Yeah, daddy's balls are hairy alright. Full of spunk too.
"Son..." Crome's breathing was growing hoarse, and Zach could tell from his far-off look that he was close.
"I'm about to make some babies."
Overtaken by instinct and a need to service his father wheresoever possible, Zack braced his hands directly on his father's thighs, noticing his legs starting to coil and thrust up as he gets closer and closer to his orgasm.
"I want to breed a little boy..." Crome whispers, no, whimpers, like a dog; a slave to his lusts.
Zach, with all his strength and courage he could muster, clasped his mouth around his father's throbbing, purple tip (that threatened to turn a darker shade of purple from his much his son's tender handjob turned him on).
Using both hands, he milked the horsecock that is his father's cock, and made sure his daddy's pervert seed in emptied straight into his waiting, young maw. In mere seconds, Zach's maw already overflowed with jizz. Strings were falling from his chin, hitting his father's pube bush or chest fluff, landing on blobs around his body on general, but still Zach continued, his mouth attached on his dad's cock like the expert daddy milker he is.
"Young ones know best nowadays," Crome breathed out, his mind clearing of cum. He chuckled a bit, in awe of what he has just experienced. Zach did the same, leaning back with a deep sigh. He splayed himself out on the floor, and Crome cuddled him close.
“C’mere, kiddo. From now on, cuddles with daddy will always be allowed.” Crome’s deep voice vibrated through his chest, making Zach feel at ease. Zach closed his eyes and smiled, enjoying the warm embrace of his father.
“I love you, daddy…”