When she finally closed those massive mounds around his cock, Will thought he was going to faint. It had been years since he'd ever felt a pair of breasts around his cock, and it had been many more years since he'd begun dreaming about those specific breasts. When she pulled upwards slowly, the first sliding movement, Will shook. He was staring at the sight of his cock between his sister's breasts, feeling her spit slick between their skins. When she lowered her head and let another dollop of spit directly on the head of his cock, nestled as it was, something clicked in his mind.

Throwing his head back, he...