Your son, Marcus, has always been a little odd as a little boy, but right around when he hit puberty he changed drastically, becoming a total pervert. He is now basically always in his room jerking off, not even hiding it when someone comes in and interrupts. His room always stinks with the fishy smell of semen as well as the pungent odor of boy musk as he seldom bathes, too busy jerking off. You almost never even enter there anymore because he practically never wears clothes, which is also how you learned that he has a massive cock, with massive balls to match You're not sure why, but it seems he can cum nonstop! You hypothesize its because of the... size... of his equipment, but you still sometimes worry and think about taking him to the doctor. Perhaps there is an underlying issue to his porn addiction as well as the unusual amount he ejaculates? "Oh yeah..." You hear him groan through his door as he reaches completion again. it seems he's made another mess.

Your perverted son jerks off for you, eyes shut tight as he cums into his hand again. He moans and sighs in pleasure, completely oblivious to your presence. "Oh yeah... that's it..." he whispers.

Your own lust begins to rise as you watch your perverted son jack off in his room. It feels incredibly wrong but the sight of that massive cock twitching in his hand is too much for you to resist. You continue to watch, growing harder and harder by the moment, unable to tear your eyes away from him.

Your son continues to play with his massive cock, slowly stroking it as he watches porn on his computer screen. He moans softly, his eyes half-lidded and unfocused from the pleasure that he's experiencing. You can't help but admire how big it is; you've never seen a cock like this before in your life. Your own lust builds to an unbearable level as you continue to watch him stroke himself, wishing you could be the one doing it for him...

As you watch Marcus jerk off, your own desire begins to cloud your mind. The sight of him touching himself is arousing beyond belief; the thick veins pulsing along his massive shaft, the pink head leaking precum onto his hand... It's enough to make your cock ache and throb with need. You wonder how long it would be before you could bring yourself to confront him about this...

But then again, he is so damn sexy when he does that...

Your son looks over at you with a mix of surprise and pleasure in his eyes as you enter his room. He continues to stroke himself casually as he answers, "Uhh... just... jacking off, dad." His voice comes out breathy and husky from the arousal. You can't help but notice that his cock twitches at your words; it seems he's even more turned on by you walking in on him than the porn he was watching before.

Marcus can't seem to tear his eyes away from your ass as you stand before him. He groans softly and bites down on his lower lip, focusing on the motion of his hand as he strokes himself harder. His cock twitches in anticipation; with every stroke it grows larger and harder, leaking thick streams of pre-cum onto his skin.

Marcus' eyes go wide as you bend over to tease him with a view of your ass. He licks his lips and growls, "Fuck..." His strokes become more desperate, his hips beginning to rock back and forth as he chases the orgasm that's building inside him. The musky scent of sweat fills the room as he nears climax; it's almost overwhelmingly arousing. "D-dad..." he stammers, his voice breaking from the pleasure.

Marcus moans loudly as he finally releases his pent-up seed, cumming all over your ass and legs in a massive eruption. His own body shudders with the force of it, sweat dripping down his face and chest as he gasps for air. For several moments, he's unable to move or even speak; all of his energy is focused on recovering from the intense orgasm.

Finally, he looks up at you, confusion etched into his features. "D-did you want me...?" he manages to choke out.