Villages by John Updike (Hamish Hamilton)
A flock of crows, six or eight, raucously rasping at one another, thrashed into the top of an oak on the edge of the square of sky. The heavenly invasion made his heart race; he looked down at his prick, silently begging it not to be distracted; his mind fought skidding into crows and woods, babies and Phyllis, and his prick stared back at him with its one eye clouded by a single drop of pure seminal yearning. He felt suspended at the top of an arc. Faye leaned back on the blanket, arranging her legs in an M of receptivity, and he knelt between them like the most abject and craven supplicant who ever exposed his bare ass to the eagle eyes of a bunch of crows.
Faye took him in hand. He slipped in. He became an adulterer. He went for the last inch. She grunted, at her own revelation. His was that her cunt did not feel like Phyllis's. Smoother, somehow simpler, its wetness less thick, less of a sauce, more of a glaze. It was soon over. He could not help himself, he was so excited, proud, and nervous. When he was done, he opened his eyes, and saw this stranger's face an inch from his, seemingly asleep, the closed eyelids showing a thin pulse, her long lips curvedself-lullingly.