Asher spat thickly onto his palm, his breath ragged as he leaned into the thick underbrush. His cock stood hard and veined, the cool air of the riverbank teasing his sensitive skin. With a slow, practiced motion, he smeared his spit along the length of his shaft, dragging his fingers up and down, tracing the underside to the twitching base. His grip on his cock tightened as he began to build a rough and eager rhythm when—

"Oh... YES... honey, fuck!!!! Wash that smile goo out my pussy!!"

His mother's voice rang out through the air, loud and unrestrained, like a siren's cry that cracked straight through his concentration.

Asher froze.

The voice yanked him back to reality like a lash to the spine. Then came Sharon's high-pitched giggle, playful, and impish.

"I'm just helping you bathe down here, mommy," Sharon said with mock innocence. "Look! You've still got some of that slimy goo stuck inside your cunt! But now your own juices are also flowing out! Are you excited having your daughter's fingers deep down where she came from?"

Onalenna bite her lips, muffling her moans. Her daughter's fingers despite being small were actually driving her crazy, scooping upward and teasing her g-spot before she pushed them further inside her drenched pussy, touching her cervix, and causing her to tremble in euphoria.

Asher's eyes widened behind the brush, his entire body stiffening. He dared not peek. He knew himself too well, he was teetering on a ledge already. If he so much as glimpsed what they were doing, he might lose all sense of control. He might end up doing something to his own mother that might disrupt the normal mother and son relationship between them. So he stayed hidden, breathing heavily, his cock throbbing in his fist like a living thing.

Then came it the wet, slick, obscene, and sex slurping sounds. The unmistakable, lewd sound of Sharon's fingers sinking into her mother's tight, drenched cunt, slow and deliberate. Even the nearby river seemed to hush in reverence.

They had told him he could watch them bathe. That had been their invitation. Their tease. But this wasn't bathing. This was something else entirely. Something lewder. Wilder. And incestuous!!

His cock jerked violently in his hand, precum oozing from the tip in a steady stream, painting his knuckles. He began sliding his thumb slowly, agonizingly, over the pad of his frenulum, back and forth, using the slickness to massage the tender spot just beneath his cockhead.

"Mhhh…" Onalenna's voice grew desperate, her moans coming in urgent whimpers that sent sparks across Asher's skin. What were they doing now? Were they still teasing each other under the guise of washing or had they thrown all pretense into the river, and we're now doing something else entirely.

His mind, dark and imaginative, spiraled.

He imagined what his mother could be doing right now: grabbing her massive tits, squeezing the soft flesh roughly, her nipples erect and needy, as Sharon slid her slender fingers in and out of her cunt. The gooey remnants of the slime still clung inside her, adding a filthy slickness that made their play even more depraved. He imagined Sharon's tongue dipping down, tasting her fingers between strokes, smirking at her mother's cries of pleasure.

And then his fantasy changed. He no longer imagined what they were doing. He began imagining himself in the scenario too.

He saw his mother moaning for him, and not gor Sharon's fingers. He imagined her legs spread wide on the river stones, the light from the dungeon crystals shimmering off her slick folds. He pictured himself standing between her thighs, his cock grinding into her mature pussy, pressing against places that had never been touched before. One of his hands would be locked around her waist, pulling her back into every thrust, the other clawing at her bouncing tits, the ones he used to suck on when he was a baby, or at least the ones the real Asher used to suck, her nipples stabbing into his palm.

His mother's voice rang out again—this time, deeper,and more guttural.

A bestial moan ripped from her throat, loud enough to scare birds from the trees. Then—silence.

A second later, a squelch echoed out, followed by the distinct sound of her cum splashing into the river, like someone had overturned a pot of water onto stone. It sounded like her pussy had clenched and released all at once, gushing an uncontrollable wave of climax into the current.

"Sharon… you mischievous little thing!" Onalenna moaned, her voice trembling with aftershock. "How could you do that to your own mother!!! Such a dirty child!!"

Sharon's giggles answered, musical and wicked. "But you enjoyed it, didn't you, dear mommy?" she purred, her fingers still plunging into the wet heat of Onalenna's cunt, each thrust drawing out another soaked, breathless moan.

Onalenna sounded broken, beautifully broken as her orgasm continued to tear through her. Her moans were no longer words, just high-pitched cries of desperate pleasure. Asher felt his body tighten. He imagined bursting through the bushes and burying himself inside her at that very moment, her cum slathering his cock as he drove into her hard and deep. He'd bend her over the river rocks, grip her hips tight, and slam into her while she screamed, her squirt splashing all over the stones with every punishing thrust.

Another wet sound hit the air, another wave of her climax. She squirted again, her fluids hitting the river water with such force it made him shudder.

That did it.

His back arched, his balls tightened, and a growl left his throat as he came—hard. Thick streaks of cum shot up across his stomach, painting his torso in hot ribbons. One after the other, six, maybe more until his whole chest was coated. His vision blurred as waves of euphoria crashed over him.

He collapsed into the foliage, his heart hammering, eyes dazed.

From the riverside, he could hear Sharon still teasing, Onalenna still gasping, the air thick with post-climax heat and mischief. His cock twitched as it softened, still leaking onto the leaves beneath him, the scent of sex and sweat hanging in the air like a mark of the sinful scene he had witnessed without seeing.

He remained still, spent, slick, and shaken, his ears ringing with the memory of his own mother and sister's moans, and his mind already craving more.

He'd already fucked his sister more than once. But he was hesitating to go for his mother. What if she found him weird.

What son in their rightful mind would go out naked in front of their mother and shove his dick inside the very same hole he came out from? That'd be weird. He told himself that. But another question came to his mind.

What kind of mother moans and squirts everywhere while her own daughter fingers her, and her son is not even far from them? That's just what Onalenna just did.

Does that mean she wouldn't really find him weird if he came out and asked to fuck her? After all, she'd been teasing him lately. He could tell.

He sighed again.

What do you think? Mom is sexy, isn't she?

Sharon's earlier question lingered in his mind again.

She's fucking sexy!!!

His mind responded to the question without him thinking about it!!

"Now it's your turn to bathe me too, mom!! Don't you think it's unfair to leave your beautiful daughter dirty with slime gooe?" Sharon's playful voice could be heard.

"Come here, you little twerp!!" Asher heard his mother say as Sharon giggled, and a few seconds later, Sharon was beginning to moan unabated and the sound of Onalenna's palm of her hand could plainly be heard slapping into Sharon's soaked lips as she finger fucked her rapidly.

Yup! Finger fucked. They weren't bathing anymore! He could tell from the sounds.

The thought of his mom fucking his sister only a few feet away with their cunts and bodies exposed would have disgusted him in his previous life, but right now, he was struggling to stop himself from going out the bush, and asking if he could join them.

The sounds on the other side of the bush briefly changed into a much more rapid flicking sound. Sharon's moans became more labored and breathy.

"Oh, mommy!! Yes... wash all the slimy goo off my cunt!! Please... wash them faster!!" Sharon moaned.

"Let's get that young pussy of yours clean and fresh, shall we!?" Onalenna's voice echoed.

Asher gulped hard, sweat lining his brow. "Damn it… my cock's hard again!"

Frustration twisted his face as he bit down on his lower lip, his hand already snaking down to grip himself. He began stroking, fast and rough, hoping the pressure would push him over the edge.

But it wasn't working.

His fingers tightened, pumping harder, but the heat only simmered—it wouldn't boil over.

Maybe I'd cum faster if I took just one peek…

The thought flashed through his mind. He hesitated for a breath, then gave in.

He shuffled forward, trousers sagging around his knees, flapping with every step as he crept toward the edge of the bushes. His heart pounded. Every rustle of leaves felt deafening.

Then he leaned out.

Just a peek.

And what he saw struck him like a slap of raw incestuous lust.

TBC