Now that his son is rightfully educated about the birds and the bees, aptly named ‘daddy dragon’ is totally fine with letting it all hang in front of his kid. As he should be. 
"No man of the house should ever be ashamed of himself," Zach's father once said, the day after he got stroked off by his son. He then proceeded to undo his robe and casually sip his tea like nothing is happening, Zach's mind and hormones overflowing at the sight of his father's 9-inch erect dad dick.
("Not again...") He thought, feeling much of the same emotion he had when he played with his father's dick while he was "sleeping". The only difference now, Crome is wide awake, looking lovingly at his son as he remarks on how much he's grown these past few years.
Zach can only weakly smile in response as he tries desperately to keep his eyes on his father's upper body, but even that is so unimaginably hot, what with his grown-out beard and fluffy chest hair, which now appears in full view before him. It’s just not fair. Fathers can't be that hot, right? But they can be. Oh, they can. Because men are men, no matter what. The type of men to knock up bitches in this world are the ones who are always studly and worthy of respect. The women won't take no weak man for a husband.
If he doesn't have a smidge of chest hair or a deep voice, it's a hard pass. Luckily, Crome has both. Age has only made him sexier. He's like a fine wine. Now, it would be expected of me to continue this train of thought, but imagine yourself in Zach's shoes for a second. When you sit in the kitchen only for your dad to come in with an open robe, morning wood and a musky air about him, would you even be thinking about anything at all? No. As a matter of fact, the only thing running through Zach's mind right now is when can he next masturbate. What excuse can he make up to rush up to his room to crank out a quickie to his father before school, knowing full well he's nothing but a few metres away from him?
The strangeness of father son relationships... I'll be honest, I don't think it'd be uncommon for you to masturbate to your dad. Because it's not just about looks. It's the type of person he is. When Crome is the supportive father he is, Zach cannot help but feel enthused with love for the 45 year old DILF.
It's love - plain and simple. Once you spank it to your dad, you realise you've got a preference. Now, to stroke him off and make him bust his nut high and hard in the air from your inexperienced hands? That's something only Zach has gotten to do. Lucky bugger…
Zach swallowed the lump in his throat as he attempted to make a semblance of a conversation.
"Uh... So how's wo-"
"Aaaaahh..."
Crome cracked his back and moved his body around, seeming uncaring to his loose robe, and even giving his fuzzy balls a quick scratch, the sound of his scratching reaching the young dragon’s ears and reminding him of what happened yesterday. 
"Mhm... Nice day out, ain't it, son?" Crome nodded towards the window, the steam from his freshly brewed tea rising.
Zach did not turn his head. In fact, he did not break his gaze at all. He continued staring at his father's handsome face.
Crome looked back at Zach for a few seconds, meeting his dead-lock gaze, and his face flickered with embarrassment. 
"Tch... Fuckin' horny kid..." He whispered as he walked away.
"I'll be ready soon, kiddo." He called out.
"...O-Okay..." Zach responded, clearly not himself, the tent in his pants being the only indicator of any sign of life in him for the moment.
Now it’s 40 minutes before school and Zach has got a boner so hard that it refuses to go down. All thanks to his undeniably gorgeous father. He loves everything about him. His very presence makes Zach’s heart soar. The way Crome carries himself, the way he casually brushes off things that would inconvenience most people, sitting him down every night to talk about his grades and schoolwork, only to end the conversation with “Yeah, there’s no way I’m taking that phone off of you. You gotta spank it to de-stress, kiddo.”
Despite his outward appearance, Crome will make every effort to support his son. Even if the father himself is scrolling through the very same stories as his young boy every night, secretly wishing he could find another father that thinks the same as he does. Now that Zach is growing older, it’s getting harder and harder for Crome to hold his instincts back. Sometimes he just wants to go full apeshit and scream in his face about how sexy he looks when he sees him out of the shower. But no, that would complicate things. Better to handle it naturally and maturely. 
Crome thought of a plan. He would stroke off his son as he sleeps. Chad move, I know. But it’s time for payback. If his kid has enough confidence to openly stroke off his father without barely knowing anything about sex as much as he does, then it’s time to be himself, and let himself give in to these feelings for once. Because, when Zach did it, it just served to strengthen their relationship. What’s to say that Crome giving his son such a good handjob that it causes him see stars won’t make them fall in love? You see, this logic is irrefutably sound.
 
Crome swerved on his feet before he left the room, ready to say one last thing to his son, who seemed to be staring off into space with a visible bulge in his sweatpants.
“Remember son, you scratch my back, I scratch yours,” he said with a wink.
Zach looked completely lost.
“C-Cool, good to know…” he stammered out.
(“Yeah, there’s nothing going on in that head… Damn cum-brained kid.”)
---When the opportunity finally arrives…
Crome reached for his son's morning wood, seeming to look around 6 inches now that it's fully erect before him.
"Christ, you're only 15 and you're packing this thing. What's up with you, son?" Crome was clearly flabbergasted by how much his son has grown between the legs. He didn't know that teenagers could be so hung. But it's true. Crome was just like his son at some point. The apple doesn't fall far from the tree. That is to say, if your father has a big dick, you’ll get one too. Zach inherits his massive cock and perverted instincts from his father, of that there can be no doubt. But does he inherit the older dragon’s gut? No, not yet – in fact, he has something far more attractive to his old man: the fountain of youth.
Zach propped himself up with his elbows, looking at his father with a dreamy look in his eyes.
"I dunno, dad. Maybe I just take after you." He replied. 
Crome's eyes fluttered, his breath growing more ragged and heavier for every second he spends in the presence of his ridiculously hung and cum-smelling teenage boy. 
"Thanks," he smiled, reaching his other hand out to stroke his boy's cheek.
"But you're far more beautiful than me," he continued.
"You have your mother's looks..."
Crome's faced inched forward to his son's until his snout touched the boy's small nose.
The two wordlessly opened their lips and lost themselves in a deep kiss. Zach's heart was pounding. So was Crome's.
This is how it's meant to be; the true love between a father and his son. Or so Zach thought. As for Crome, he’s wondering when he can claim the kid for himself. Hopefully, that would be now…
Even Crome couldn't contain himself. Spurred on by the erotic sight of his son's young, handsome face and his naturally feminine form, he could easily imagine his kid as the woman he once loved. But once his groping hands reached the boy's firm front, his fingers running over his taut abs, that's when he knew. He's not touching a woman. He's touching a young boy in the midst of puberty. But, still, Crome continued to make out with his son, overcome with his feelings of lust. (Again, chad move.)
With his father's large body hovering over him, his very existence casting a pall over the inexperienced youngster, Zach felt like he was drowning in lust. He's literally just lying there, in his single bed, his father's fluffy beard brushing against his face like he always dreamed of. Dude's just straight up making out with his kid. And he ain't stopping... until now.
Crome pulled back with a string of spit connecting both their chins, each man as set in lust as the other. 
Crome wiped the drool falling from his mouth, and his eyes looked like they were filling with tears.
"Heh. Looks like we're going to need a bigger bed."
Zach threw both of his arms over his father's back and hugged him close. Even if it felt like the bed was going to collapse from their weight, Zach did not care. All that matters is showing his father how much he loves him.
"I love you dad," he whispered out in the dragon's ear, holding back tears himself.
"Sorry my gut's crushing you." He wittily replied.
Zach smiled and closed his eyes.
"I like it."
--The next day...
After their emotional experience, Crome sought to take care of his son's morning wood once and for all.
He would wake him up like last time - by pulling down his PJs and stroking his fat fuckin' teen dick, covered by his grey briefs.
Even his son's balls were starting to hang out of the underwear.
"Bloody hell kiddo, have you thought about getting something bigger?" 
Zach stirred awake from the sound of his father's deep, attractive voice. Judging by his previous dream, in which he was breeding a crush from school, once he woke up and ascertained the reality of his situation, Zach easily put two and two together. He only nearly had a wet dream because his father was stroking him off in his sleep. What a cock hound. Don't let his age fool you. Crome is every bit the cocksucker as his son. They're both men after all: destined to service each other.
Zach was a bit embarrassed when his father discovered he was still wearing briefs that were given to him when he was younger, but he likes how they make him seem bigger.
"N-No, I..."
"It's alright, son." Crome interjected, his fingers trailing up the boy's slender thighs.
"Daddy's here to make you feel better now."
Zach squirmed delightfully from his father's touch. His dad was stroking his big dick like nobody's fuckin' business, his eyes focused on his son’s dick more intently than anything else he's experienced in his sex life. Crome is really really into the thought of beating off his 15 year old son. He wants to make him blow his hormonal spunk so hard that his balls will ache. Crome wants to see his boy’s thick white ropes of cum trickle down his defined front. He wants to make the kid cum hard. Judging by Zach’s squinting expression, and the growls escaping from his throat, he's already well on his way to having the best orgasm of his life. His little legs parting and closing, Zach's cute butt squirming into the bed as his body is wracked with all of these newfound feelings.
(“Yeah, the kid's having the time of his life, alright...”)
"You're a man now, boy." Crome huskily stated, breaking the silence.
"And I wanna see how much you've grown." He growled.
Crome used his other hand (that he regrettably had to stop groping his son with) to pull down the boy's briefs, and out flicked his massive 6 and a half inch hormone-filled, mid-puberty cock. Crome's nostrils instinctively flared. The whole room smells like a cum den - anyone in their right mind would be able to tell a teenage boy lives here for at least 3 hours a day, fapping his life away.
"Fuck. You smell ripe, kid."
Zach blushed.
"Is that bad?" He asked.
Now that his father's nose is pressed up against the base of his dick, inhaling the scent like a drug, Zach would reasonably assume no.
"It’s totally fine to have a fat dick and jerk off at every possible moment when you're 15 years old." Crome said in one breath, like he was reciting some old rulebook.
What came next surprised Zach. His felt his father's mouth wrap around his uncircumcised tip, his throat enveloping down to the base of his cock in one gulp. Zach was very nearly overstimulated, breathing in so much air that he felt like he was about to burst, but Crome held him steady, pinning his chest against the bed with his arm.
"Stay calm, son. Daddy's going to drain you dry, alright?" 
It’s not like Zach had a choice in the matter.
As Crome deepthroated his son's cock, his phone fell out of his hand by the side of him. Crome briefly looked over at the screen, finding it to be a page filled with text. At the top was the title of "Jerking off Dad". At least daddy dragon knows where his kid gets his inspiration from now.
That just made him deepthroat his son harder. His damn kid is into incest. No fucking wonder he loves his dad so much. Zach cried out for his father to slow down but Crome simply couldn't. He was salivating on his son's big fuck-stick like a monster. Drool pooled down into his patchy growing bush of soft pubes, snaking down his shaft in thick goops as Crome continued to suck up and down like a machine on his teenage son's cock. 
Milking his son. That's all that matters. Making his toes curl at the feeling of his fluffy beard hitting his balls. Making Zach happy knowing he's getting sucked off by a man twice his age and then some. It's what he's always wanted. What they've both wanted.
Hearing his father's deep growls as he sucks him off set Zach over the edge. He couldn't hold back anymore and had to pump his father with ropes of hormonal spunk.
"Take my fuckin' jock bro spunk, yo!" Zach cried out, imagining he was a hung jock teenager in one of the stories he loves to read.
That just lit a fire in Crome, a heavy shot of precum bursting out of his cock. The father's lust was made even more prevalent when Zach, in the midst of his orgasm, slapped his father's ass while the other was holding him down by the neck in a weak grip.
"Your ass is so fucking fat, dad!" Zach cried, finally admitting all of his desires and fantasies to his father.
"You've got a fuckin' dumptruck of an ass, you fat, sexy pervert!"
Crome was mind-blown. He popped off his son's cock to speak to him, but he was interrupted mid-sentence by a shot of cum shooting in his mouth.
Zach snorted at this, clearly impressed over his new dominant attitude.
"Yeah, take it, you sexy DILF! Shut up and suck my fucking cock!"
Crome then proceeded to suck his son's big nuts, knowing he won't have chance to speak so long as his cum-brained gooner of a son continues his mini roleplay. Tch, 'roleplay' my ass. His son is the type of dude that deserves to cum all over his father's handsome face and show the grizzled old-timer who's boss. 
"Don't underestimate the younger generation, punk! We've all got fat dicks and shoot spunk like a horse!"
Crome was almost baffled by what's coming out of his son's mouth. Just how much of these filthy stories has he read? But no matter... The apple doesn't fall far from the tree. And Crome, evidently, can't wait until his son's Adam’s apple forms, so that way he can truly start spouting crap about being on par with his father.
The way daddy dragon sees it: until his son is 18, he's still got a lot of growing to do, a lot of things to learn. But at least Zach loves the sex as much as his father does.