Family Breeding Pact

"Susan, mind scrubbing the toilet for me? I'm carrying the Hart family heir, and the doc says no squatting—bad for the baby."

Lily's voice dripped with that fake-sweet tone from the kitchen table, her hand rubbing her swollen belly. She'd popped out their first kid last year, and now this. Susan forced a smile, peeling another grape that tasted like ash.

"No problem, Lily. Happy to help."

She trudged upstairs to Jake and Lily's bathroom, bleach bottle in hand. The door was ajar. A heavy splash hit the water—then silence.

"What the—? Susan? What are you doing here?"

Jake spun around, his thick, veined cock still in his fist, piss dripping from the oversized head. His face flushed beet red, but he didn't tuck it away fast enough. Susan's throat went dry.

"Just... cleaning the toilet for Lily. You need it still?"

She swallowed hard, eyes flicking down despite herself. It dwarfed Greg's limp excuse—thicker, longer, the slit gaping like it could unleash a flood. No wonder Lily was knocked up again.

"Hang on a sec, almost done. Couple drops left..."

Jake gripped it tighter, shook off the last streams with a flick. Susan stole another glance, heat crawling up her neck. That sack hung heavy, loaded. Gym-rat body—chiseled abs, firm ass curving into those V-lines. Greg? Beer gut city, barely outlasted a sneeze in bed, and the clinic confirmed: weak sperm. Hopeless.

"Mind if I swap my boxers? Got a clean pair right here..."

No mom around since Jake was a teen—he'd always leaned on her like a big sister. He shucked the soiled ones, that monster swinging free inches from her face. Balls swollen, promising. Susan bit her lip.

"Thanks, Susan. You're the best." He bolted downstairs to Lily.

She scrubbed the rim spotless, neighbors' whispers about her barren womb echoing in her head. Lily bossing her around now? The bitterness boiled over. Sitting on the seat, skirt hiked, fingers dove into her aching pussy. Greg never filled her right. Every night, Jake railed Lily raw—moans shaking the walls.

"Jake..."

She snatched his discarded boxers, musky piss and cum stains fresh. Sniffing deep, that raw, dominant stench hit her. Tongue darted out, lapping the sticky globs—salty-sweet, addictive. As big sis-in-law, she shouldn't, but fuck it.

"Oh god, Jake... I want it... love your cock so much..."

Fantasies of that beast splitting her flooded in. Legs clamped, juices slicking her thighs in strings. Panties first—crumpled, shoved into her greedy hole. Roomy enough for fingers too.

One... then three plunged deep. Body bucked, tits heaving.

Footsteps. Door creaks wider.

Frank—dad-in-law, ex-fitness coach turned retiree—stood there, swim trunks tented high from his pool laps. He'd peeked through the crack, eyes locked on her pink, untouched slit. Virgin-tight, wasted on Greg's inadequacy.

"Jesus, Susan... what the hell is this?"

She jolted, panties lodged deep, fingers jammed. "Dad—Frank! Oh god, no—it's not—"

Shame burned as she yanked at the fabric, but it snagged, soaked tight inside her. Pulled harder—nothing. Exposed, dripping, Jake's scent leaking out. Frank's bulge throbbed visibly, sweat gleaming on his ripped frame. He stepped in, door clicking shut.

"You stuffing my boy's dirty underwear up your cunt? While everyone's downstairs?"

"I—I was just... cleaning. It fell, I—fuck, it won't come out!"

"Doesn't look like cleaning. Looks like you're starving for real dick. Greg's got you this desperate?"

His voice dropped low, eyes devouring her spread thighs. No backing out now—the air crackled, forbidden line crossed. What next?