Doctor Nancy informed Joan she wanted to see Billy a week later, assuring her nothing was wrong with him. "In fact, he's about the healthiest boy I've seen."

Neither Billy nor Joan saw the wink that passed between Doctor Nancy and the pretty receptionist. Joan had looked a little guilty, and couldn't bring herself to look into the doctor's face.

In the car on the way home, Joan was aware that her son stared at her openly. It had been some time since she had been looked at just that way. Thinking it was because of what she and the receptionist had done, Joan found it thrilling for her son to stare at her. Not at her really, but at her straining tits. She was puzzled because Billy had never shown an interest in tits or anything else.

Despite the powerful orgasm she had experienced with the pretty girl, Joan found herself reacting to the way Billy looked at her. Her nipples swelled and strained, and her cunt began to pulsate inside her tight jeans. Her reaction was surprising, yet it wasn't. She always responded when a tan looked at her the way her son was. Responded, yes, but she never allowed a man to know her reactions.

Feeling ashamed of herself, she glanced at the front of her son's pants. A faint flush of shame covered her face, and she quickly tuned back to the road. Her son had seen the pretty girl, looked up her dress, and he had gotten extremely horny, his cock pressing at his pants. He had not been ashamed of looking, either. Maybe it was his youth, but maybe it was a growing interest in girls. If it was interest in girls, or what they had under their dresses… Joan shivered as if chilled. But she wasn't chilled; it was a hot, anticipatory thrill.

They arrived home, and not speaking to each other and entered the house. Joan wanted to get out of her tight jeans. The crotch was pulled against her cunt, and normally she would enjoy the pressure. But her cunt had been sucked by the pretty receptionist and the tingles remained.