She woke up feeling weird between her legs, like something was pushing out. At first she thought it was just morning horniness, but when she kicked off the sheets her pussy lips were swollen and something thick was starting to poke out from the top of her slit.
"Holy shit, babe, look at this," she said, grabbing her boyfriend's arm. He rolled over, eyes going wide as her new cock kept growing right there in front of him. It was already six inches and still thickening, the head dark and shiny, veins popping along the shaft. Her old clit had turned into a full dick, balls forming underneath, heavy and full.
"Fuck, it's real," he muttered, reaching out. She slapped his hand away at first, then grabbed it and wrapped his fingers around the base. "Stroke it. Feel how hard it is."
He jerked her off slow at first, thumb rubbing over the slit as precum leaked out. She groaned, hips bucking. The sensation was insane, better than any clit rub she'd ever had. Her cock pulsed in his fist, growing another couple inches until it was a solid nine, thick enough that his fingers didn't meet around it.
She pushed him onto his back and climbed on top. "I'm gonna fuck you with this," she said, voice low and filthy. "Gonna shove my new dick in your ass and wreck you." He was already hard, cock twitching against his stomach. She spat on her fingers, worked two into his hole, stretching him quick and rough. He moaned, pushing back on her hand.
When she lined up her cockhead against his ass it looked massive. She pushed anyway, the fat tip popping past his ring. He gasped, body tensing, but she kept going, feeding inch after inch into him until her balls rested against his cheeks. "Take it all, you fucking slut," she growled, starting to thrust.
She fucked him hard from the start, no warm-up, just deep strokes that made his whole body jerk. Her new cock felt perfect, every nerve lighting up as his tight ass squeezed her. Precum and spit squelched around the base with every slam. She reached down and grabbed his cock, stroking him in time with her thrusts.
"Goddamn, your ass is gripping me so good," she panted. She flipped him onto his stomach, mounted him again, and pounded down harder. Skin slapped loud. His moans turned into broken curses. She leaned over his back, biting his shoulder while she drilled him.
They switched positions fast. She put him on all fours and railed him from behind, one hand fisted in his hair, the other reaching under to milk his cock. Her balls swung and slapped his taint. Sweat dripped off both of them. Every time she bottomed out he whimpered, hole fluttering around her thick shaft.
She pulled out, flipped onto her back, and made him ride her. "Sit on my dick," she ordered. He lowered himself, taking her all the way in one go. She thrust up to meet him, watching his face twist with every bounce. His own cock bounced against his stomach, leaking steadily. She wrapped her hand around it again and jerked him fast.
"I'm gonna cum," he warned. She didn't slow down. "Do it. Shoot while I fuck you." He came hard, ropes hitting his chest and her tits. His ass clamped down like a vice and that pushed her over. She buried herself to the hilt and unloaded, pumping thick cum deep into his guts. Her new balls tightened and pulsed for what felt like forever.
They stayed locked together, breathing heavy. Her cock stayed half-hard inside him, twitching with aftershocks. She pulled out slow, watching cum trickle out of his stretched hole. "We're doing that again," she said, already stroking herself back to full stiffness.
"And next time I'm fucking your throat first."
He just nodded, already reaching for her cock again.
