Chapter 5: Aunt Lisa's Bathroom Initiation
The front door groaned open on its heavy hinge, and laughter, bright and familiar, spilled into the foyer. “We’re here!” called a woman’s voice, rich and warm. Aunt Lisa swept in, her arms laden with bags, her dark curls bouncing. Close behind, quieter but smiling, was their cousin Jessica, a young woman of twenty with her mother’s eyes and a shy wave. The greetings were still wrapping Marcus and Sarah in tight hugs when the crunch of gravel announced another car. Their parents, James and Diane, followed, their faces relaxed, carrying the cool evening air on their coats.
Dinner was a lively affair in the old dining room, the long table crowded with dishes and the easy comfort of family. Stories were traded—Lisa’s tales of city life, Jessica’s quiet updates from college, William and Eleanor sharing fond, teasing memories of James as a boy. The conversation was nice, polite, funny. The twins participated, but a new, secret knowledge hummed between them, a silent current beneath the clatter of forks and the warm glow of the overhead lamp. They caught each other’s gaze across the table, a quick look that held the memory of the previous day’s profound intimacy.
As dessert plates were cleared, William tapped his water glass gently. The room settled. “Before we all retire,” he began, his wise eyes resting on Marcus and Sarah, “Eleanor and I wish to share some joyful news. Your grandchildren,” he said, looking to James and Diane, “have been successfully initiated into our family’s continuity. They embraced the tradition with open hearts and profound respect.”
A pleased silence hung for a moment. Diane smiled, a little tearful, and James gave a firm, proud nod. But it was Aunt Lisa whose face lit up with uninhibited delight. “Oh, that’s wonderful,” she breathed, clapping her hands softly. Her gaze danced between the twins, sparkling with mischief and something deeper, a shared understanding. “Absolutely wonderful. It calls for a proper… continuation.” She pushed her chair back. “Come on, you two. With me.”
Marcus and Sarah exchanged a glance, then rose, a flutter of nervous excitement in their stomachs. Lisa led them upstairs, not to a bedroom, but to the grand master bathroom. Jessica remained downstairs, engaged in quiet conversation, as if this departure was the most normal thing in the world.
The bathroom was a cavern of steam and old tile, the massive clawfoot tub dominating the space. Lisa closed the door and turned to them, her confidence a comforting presence. “This,” she said, gesturing to the tub, “is for washing away the outside world. Just us now.” She began to undress, her movements unhurried. Marcus and Sarah followed, their clothes pooling on the patterned floor until they stood bare together in the humid air.
They slipped into the deep, steaming water with sighs. The heat was a balm. Lisa took a bar of lavender soap and a soft cloth. “We wash each other,” she instructed, her voice a gentle murmur against the drip of the old tap. She started with Sarah, running the soapy cloth over her shoulders, down the curve of her spine, over the swell of her buttocks. Her touch was gentle, sensational, exploring without claiming. Then she guided Sarah’s hands to wash Marcus, his lean muscles sleek under the water, his cock already stirring amid the suds. Marcus returned the favor, washing Lisa’s generous curves, the weight of her breasts in his palms, the dip of her waist.
“Now,” Lisa whispered, her tone shifting to one of gentle instruction. “There are many ways to know someone. To taste them.” She guided Marcus, positioning him behind Sarah who bent slightly over the rounded tub edge. “Her here,” Lisa said, tracing the tight, furled rose of Sarah’s asshole. “Use your tongue. Slowly. Learn her.”
Marcus obeyed, his heart hammering. He pressed his face between his sister’s cheeks, licking a broad, slow stripe. Sarah gasped, her fingers whitening on the porcelain. He circled the tense knot with the tip of his tongue, then pressed gently, probing until he felt her give way. He ate her ass with a growing hunger, his tongue delving into that hot, secret crevice. Sarah moaned, pushing back against his mouth. “Fuck, Marcus… yes…”
“Good,” Lisa purred. “Now switch.” She positioned Sarah before her, presenting her own rear. “Your turn, sweetheart.” With less hesitation, Sarah knelt in the water and mimicked her brother, her tongue lapping at Lisa’s darker, more prominent pucker. Lisa groaned, arching her back. “Just like that. Get it nice and wet.”
Then Lisa had them both. She and Sarah got on all fours on the bath mat, their damp bodies side by side, their asses raised and offered. “Marcus,” Lisa said, looking back over her shoulder. “Both of us. Don’t stop until we’re begging.”
Marcus moved between them, the steam coating his skin. He turned his head to the left, burying his tongue in Sarah once more, then to the right, feasting on Lisa. Back and forth. The twin musky-salt flavors, the soft cries, the sight of their holes glistening under his attention—it sent a brutal throb of need through his cock. He was fucking them with his tongue, deep and messy, until Lisa was shuddering and Sarah was chanting his name into the rug.
“Enough,” Lisa finally gasped, her voice ragged. “Now the main lesson.” She helped Sarah up, bending her over the lip of the tub again. She spat into her palm, then took Marcus’s rigid cock, slicking it thoroughly with her saliva before guiding it to Sarah’s back entrance. “This is for you, Sarah. He’s going to take your ass now. You remember the feeling from William’s fingers? This is fuller. Breathe out.”
The broad head of Marcus’s cock pressed against the loosened ring. Sarah nodded, her face flushed. “Do it,” she whispered.
He pushed. There was a moment of fierce, hot resistance, then a slow, yielding surrender as he sunk into the impossible tightness of his sister’s ass. They both cried out—a shared, shocked sound of penetration. He held still, buried to the hilt, feeling her internal muscles flutter around him like a frantic heartbeat. “Oh god… Sarah…”
“Fuck her,” Lisa commanded, her own hand slipping between her thighs as she watched. “Fuck her ass nice and slow.”
Marcus drew back and slid in again, establishing a deep, rhythmic pace. Sarah’s whimpers turned to groans of pleasure, each thrust jolting through her. The slap of his wet skin against hers echoed in the tiled room. Lisa’s breathing grew hastier, her fingers working in a blur. “Yeah, take your sister’s asshole, nephew. Claim it.”
Sarah came first, her body seizing around his invading length, a choked scream ripped from her throat as her orgasm hammered through her. The violent clenching of her rectum pushed Marcus to the edge.
“Now me,” Lisa demanded, tapping Sarah’s hip. “Switch.”
With a wet pop, Marcus withdrew from Sarah, who slid bonelessly into the cooling bathwater, spent and smiling. Lisa assumed the position, gripping the tub hard. “My turn. Don’t be gentle.”
He guided his slick, aching cock to her waiting hole. It was different—wider, more giving, but just as searingly hot. He drove into her in one long, deep stroke, burying himself in the tight, gripping channel of his aunt’s ass. Lisa let out a guttural, satisfied roar. “Fuck yes! That’s it! Harder!”
He fucked her with the pent-up fervor of everything he’d learned, his balls slapping against her, his hands gripping her hips hard enough to bruise. The room filled with the raw sounds of their coupling: skin on skin, choked curses, the tub creaking against the floor. Lisa met him thrust for thrust, pushing back savagely. “I’m gonna come… I’m gonna come around your fucking cock!”
Her rectum clamped down on him in a series of rhythmic, milking spasms. It was too much. With a broken shout, Marcus plunged deep and held, his orgasm erupting from his core. He poured his release into her, jet after hot jet flooding her depths, his body shuddering violently with the force of it.
He collapsed over her back, spent, the taste of them both still on his lips.