A man's hand, calloused yet tender, reaches down to grasp his flaccid penis. He begins to stroke, his touch igniting a spark that travels from his fingers to his loins. His cock twitches, responding to the stimulation, as he continues to work it in his fist. His movements become more urgent, his grip tighter, as he watches his penis grow and harden, the head swelling and turning a deep, enticing purple.