Liam stood in the doorway of his sister Claire’s bedroom, transfixed. At 18, she was blossoming into a beautiful woman. He watched, mouth watering, as she slowly peeled off her tight jeans, revealing long, smooth legs. His eyes raked hungrily over her luscious curves, settling on the damp spot darkening the crotch of her panties.
“Mmm, you naughty little minx,” he purred, stepping into the room. “Getting yourself all worked up for big brother?”
Claire whirled around, cheeks flushing. “Liam! You can’t just barge in here! Get out!”
“Oh I don’t think so, sis.” He advanced on her, a predatory glint in his eyes. “Not when you’re being such a naughty girl, practically begging for it in those tiny panties.”
“I-I’m not…” she stammered, backing away. But her body betrayed her, nipples straining against her thin top.
Liam grabbed her, yanking her against him. She squeaked as she felt the thick, throbbing bulge of his erection grinding into her belly. “Feel that, you little slut? That’s what you do to me.”
He captured her mouth in a brutal kiss, shoving his tongue past her lips to plunder every inch. She moaned, melting against him. His hands roamed her body, groping and squeezing.
“Fuck, your tits feel so good,” he groaned, tearing her top away. “Gonna mark these pretty nipples.”
Claire cried out as he pinched and twisted the sensitive nubs. Pleasure-pain jolted straight to her core. She was dripping wet, her pussy clenching around nothing.
“I knew you wanted it,” Liam gloated, shoving her hand down to cup his massive erection. “Rubbing your needy cunt while you think about your big brother’s cock, don’t you?”
She whimpered, bucking into him shamelessly. His filthy words turned her on so much. He spun her around, bending her over the bed.
“Look at you, such a desperate little whore for it,” he taunted, ripping her panties down. “Gonna give this hungry pussy exactly what it needs.”
Claire keened as he notched the fat head of his cock against her entrance. Then with a brutal thrust, he split her open on his thick shaft.
“OH FUCK YES!” she wailed, eyes rolling back. He was so big, so deep. Stretching her open, claiming her untouched passage for himself.
“That’s it, take it you filthy slut,” Liam snarled, drilling into her spasming walls. “Milk my cock with this sloppy cunt.”
He set a furious pace, pounding her into the mattress. The obscene slap slap slap of flesh on flesh filled the room, punctuated by Claire’s wanton moans.
“Your pussy feels so fucking good,” he grunted, hips pistoning. “Gonna ruin this cunt for anyone else. You’re MINE now, you hear me?”
“Yes, YES! Harder Liam, wreck my pussy!” she babbled, lost to sensation. Her clit throbbed, Orgasm building.
Liam felt her fluttering around him, knowing she was close. He leaned over her sweat-slicked back, sinking his teeth into her shoulder.
“Cum for me, you dirty cock slut. Cream on your big brother’s dick like a good girl.”
His words sent her flying over the edge. Claire shrieked, convulsing violently as ecstasy ripped through her. Liam hammered into her clenching snatch, chasing his own release.
With a bellowing roar, he buried himself to the hilt and exploded. His cock jerked and throbbed as he pumped Claire full of his hot seed.
They collapsed together in a tangle of limbs, gasping for breath. Liam’s softening member slipped from her abused hole with a gush of their combined fluids.
“Fuck sis, we shouldn’t have done that,” he said, though his satisfied smirk belied his words.
Claire just giggled breathlessly, clenching her messy cunt. “Shut up and fuck me again, big brother.”