Getting to his knees, John got behind Kelly, rubbing the head of his cock between her spread pussy lips, then pressing it into her slowly, not stopping until it had entirely disappeared in her pussy.

"Oh, god, John, fuck me, fuck me," Kelly moaned as he began to slide his cock in and out of her slowly, feeling her pussy getting wetter and wetter with each stroke. John could not believe that he had his cock buried in his sister's pussy yet again. And it felt so good. And tight. He could see her pussy lips clinging to his cock each time he pulled back, only to disappear along with...