"Fuck fuck fuuuuck," he murmured as she swallowed him back, fingers trembling. "I want to see... that cute little button nose... bump against my belly button. If you think you can take it, cousin."

He took a special pleasure from reminding her that they're related while they fucked, and the more depraved the moment was, the better. He smiled at her, and his fingers coaxed and tugged slowly, gently, to see if she could swallow all eight inches of him back.