The sun was barely up when Rachel slipped into the barn, her plain dress already damp with sweat from the morning chores. At twenty-one she knew better than to linger alone with her older brother, but Jacob had been watching her for weeks with that hungry look in his eyes. He was twenty-four, broad from years of fieldwork, and the way his suspenders strained over his chest made her cunt ache every time she saw him.
She bent to scatter feed for the chickens when she heard the door creak shut behind her. Jacob’s boots thudded across the straw. “You been teasin’ me again, little sister?” His voice was low and rough, no pretense left.
Rachel straightened, heart pounding. “Ain’t teasing if you keep starin’ at my tits every chance you get.”
Jacob stepped close, grabbed her hips and yanked her against him. His cock was already hard, pressing thick against her belly through his trousers. “Then show me what you been hidin’ under that dress.”
She didn’t hesitate. Fingers flew to her buttons. The dress fell open and she shrugged it off her shoulders, letting it pool at her feet.
No bra, just full, pale tits with pink nipples already tight. Her plain cotton panties were the only thing left. Jacob ripped them down her thighs and shoved two thick fingers straight into her slick pussy.
“Fuck, you’re soaked,” he growled, pumping his fingers hard. “Been wet for your brother all morning, huh?”
Rachel moaned and spread her legs wider. “Shut up and fuck me, Jacob. I need that big cock.”
He freed his dick in one yank, fat and veined, the head already leaking. He spun her around, bent her over a hay bale, and slammed into her from behind in one brutal thrust. Rachel cried out, cunt stretching around him. Straw scratched her tits as he started pounding, balls slapping her clit with every stroke.
“Take it,” he grunted. “Take your brother’s cock like the dirty Amish slut you are.” He reached under her, pinched her nipples hard, then slid his hand down to rub her swollen clit in fast circles.
Rachel pushed back, meeting every thrust. “Harder. Fuck your sister harder. Fill me up.”
Jacob obliged, gripping her hips so tight his fingers left marks. The barn filled with the wet sound of his cock slamming into her dripping hole. She came first, pussy clenching and gushing around him, but he didn’t stop. He fucked her through it, then pulled out, flipped her onto her back on the hay, and shoved back in.
Her legs wrapped around his waist. “Come inside me,” she begged. “I want to feel my brother’s cum dripping out of my cunt all day.”
He buried himself to the hilt and let go, thick ropes of cum flooding her. They stayed locked together, breathing hard, until his cock softened and slipped free. Cum leaked down her thighs onto the straw.
Jacob helped her up, wiped her with a clean rag, then kissed her rough. “Tonight. After everyone’s asleep. The buggy shed.”
Rachel pulled her dress back on, already feeling his seed soaking her panties. “I’ll be there. Don’t make me wait.”
By evening the house was quiet. Rachel crept out the back door in just her nightshift, bare feet on cool grass. Jacob was already in the shed, pants open, stroking his cock by lantern light. She dropped to her knees without a word and took him into her mouth, sucking him deep, tasting the salt of pre-cum and the faint trace of her own pussy from earlier.
He fucked her throat for a minute, then hauled her up, bent her over the buggy seat, and drove into her again. This time he took his time, long slow strokes that made her whimper. One hand reached around to finger her clit while the other held her hair.
“Tell me whose cunt this is,” he demanded.
“Yours,” she gasped. “My brother’s cunt. Use it.”
He came again, pumping another load deep inside her. They stayed like that until the lantern flickered low, then cleaned up and slipped back to their separate beds, the secret thick between them.
Every night after that they found new places: the root cellar, the empty corn crib, once even the church loft after everyone left. Each time Jacob fucked her raw and dirty, filling her with his cum, and Rachel begged for more. The forbidden heat between them burned hotter than any rumspringa fling, and neither one planned to stop.
