The Blue Envelope
Copyright© 2026 by Tarl Cabot
Chapter 4: Morning Rites at the Lagoon
Incest Sex Story: Chapter 4: Morning Rites at the Lagoon - Eric found that a Random Act of Kindness could change his life in so many ways. Some of them were quite a surprise.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa mt/ft Ma/ft mt Age Gap Teenagers Consensual Romantic Gay Lesbian BiSexual Heterosexual Fiction Rags To Riches Sharing Incest Son Brother Sister Father Daughter Grand Parent Group Sex Harem Orgy Anal Sex Double Penetration First Masturbation Oral Sex Pregnancy Big Breasts Public Sex Small Breasts Nudism
Dawn came slow and gold through the sheer curtains, and Eric drifted in that liminal space between sleep and waking—until a wet warmth closed around the head of his cock.
His eyes flew open.
Keith knelt between his legs on the rumpled bed, dark hair falling across his forehead, green eyes fixed on Eric’s face. His mouth worked slowly and deliberately, tongue flat along the underside, lips sealed tight around the shaft. Morning breath and salt and skin—Eric’s hips twitched before his brain caught up.
“Keith—”
A wet pop as Keith pulled off, a string of saliva stretching from his lip to the glistening head. “You were hard in your sleep. I figured I’d help.”
Across the room, Tina stirred on the chaise, stretching like a cat. Her breasts pressed into the cushion, nipples pebbling in the cool air. She watched them with half-lidded eyes, one hand sliding lazily between her thighs.
“Don’t stop on my account,” she murmured.
Keith grinned and swallowed Eric down again—deep, deeper, until his nose pressed into the dark tangle at the base. Eric’s hands found his son’s hair, not pushing, just holding. The suction was exquisite, the drag of tongue and throat a slow, pulsing rhythm that coiled heat low in his gut.
“Fuck, you’re good at that,” he rasped.
Keith hummed around him, the vibration rippling up Eric’s spine. One hand cupped his father’s balls, rolling them gently, while the other stroked the shaft in time with his mouth. Eric’s thighs trembled. The pleasure built—steady, relentless—
Then Keith pulled off again, wiping his mouth with the back of his hand. “Not yet. I want to save that for later.”
Tina rose from the chaise, naked and glowing in the morning light, her dark hair a wild tangle. Her skin smelled of salt and the faint musk of last night’s sex. She walked to the bed and took Eric’s hand.
“Come on,” she said. “The tub’s big enough for three.”
The bathroom was all white marble and soft light, steam already curling from the sunken tub. The water was hot enough to pink their skin, and the jets churned it into a froth of bubbles that smelled faintly of eucalyptus.
Tina stepped in first, sinking to her shoulders with a satisfied sigh. Her breasts floated, buoyant and heavy, the nipples gone tight from the heat. She crooked a finger at them.
Keith slid in behind her, pulling her back against his chest. His cock, still thick and ruddy, pressed against the cleft of her ass. He reached around and cupped her tits, thumbs dragging over the stiff peaks.
“You’re so fucking wet,” he murmured against her ear—and he wasn’t talking about the water.
Tina laughed, breathless. “Then do something about it.”
Eric waded in from the other side. The water lapped at his waist, his own erection bobbing beneath the surface. He stood before her, looking down at the picture they made—his son’s hands on his daughter’s breasts, her thighs already parting under the water.
“Spit-roast,” Keith said. “You take her mouth. I’ll take her cunt.”
Eric didn’t argue. He braced one hand on the marble ledge behind Tina’s head and guided his cock to her lips. She opened wide, tongue flicking out to taste the head, and then Keith drove into her from behind.
The sound she made—a wet, muffled groan—vibrated around Eric’s shaft. Her mouth was hot, her throat working, and behind her, Keith set a steady, punishing rhythm that made her tits sway in the churning water.
“That’s it,” Eric breathed. “Take it.”
Tina’s eyes watered. Spit ran down her chin and dripped into the bubbles. She reached up with one hand and gripped Eric’s wrist, nails biting in, not to push him away but to anchor herself as Keith fucked her harder.
The water slapped against the sides of the tub. Keith’s balls smacked her ass with every stroke. He reached around and found her clit, rubbing tight circles while he pounded into her. Tina moaned around Eric’s cock—long and low and desperate.
“She’s close,” Keith said. “Her cunt’s gripping me like a fist.”
“Good girl,” Eric said. “Come for us.”
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