"Aaaaghhh!" she gurgled, closing her mouth on his prick, taking the full length into the back of her mouth.

"All… of… it, you little cum-sucking slut!" Brad winced, shoving the last of his orgasm deep into the back of her throat. As he felt the juices seep around his meat and bubble from her lips, he fell back, his chest heaving. "Oh… God… that was… was…"

As his voice trailed off to a sigh, Amy continued sucking and licking up and down his cock sure that she hadn't missed a single drop. Finally, she pulled her mouth away and cleaned him slowly, wallowing the warm drops of cum. "Then you can stick that big dick of yours in some virgin blood."

"Oh… Jesus!" the would-be minister gasped, standing.

Slowly, he stumbled toward the bed, the throbbing in his cock matching the pounding of his heart.

"How was that, big brother?" Amy asked, running her fingers up and down his thighs. "Did I suck you good? As good as Libby?"

"Libby and I don't… were saving it for marriage… she's saving herself," he muttered, his mind filled with a million disjointed thoughts.

"Libby doesn't know what she's missing," Amy said, feeling a new hunger surge inside her body. "If I had a big dick like this to fuck and suck, I think I'd do it twenty-four hours a day!"

She chewed back down on the monstrous shaft and sucked up and down for a few more minutes. Finally, she pulled away and backed toward the bed.

"You going to fuck me now?" she asked, sitting on the sheets and leaning back. She spread her legs and touched the warm, oozing patch of cunt. "Come on, Brad, fuck me," she whispered, lifting her chest so that her nipples almost touched her chin. "You can be good around Libby, but I want you to be bad when you're with me. Mmmmmm, really bad!"

"I… I can't do this," her brother groaned, his voice barely audible. He knew he would, however, even as he said the words. "You're… my sister. My own flesh and blood!"