Pussy lips part under his tongue at the kitchen sink. Blonde ponytail swings as she grips the faucet, moaning low. Cock throbs in her fist, veins popping. Stepsister's face scrunches, lips bitten hard, thighs quiver from the lick. She turns, kneels on tile. Mouth engulfs head, cheeks hollow. Eyes water. Back on counter, legs splay, fingers dig into his shoulders. Relentless tongue flicks clit until she bucks wild.