Surely the girl realizes she's exposed, Joan thought.

She glanced at her son again, feeling as if she should nudge him, make him stop staring so openly. Yet, she didn't. There was a perverse sensation of pleasure in knowing her son was looking up the girl's dress. She felt her cunt bubbling wetly, and the urge to swing her foot back and forth, bring her cunt to orgasm, was getting strong.

She glanced at her son's lap again, and his cock was now bulging out with an intense hard-on. She had never seen his cock this way before, and she felt a shiver rippling up and down her spine. Her feelings were confused about it. In a way it thrilled her, and in another she felt ashamed. Not ashamed because he had a hard-on, but ashamed because it excited her.

The girl behind the desk held her legs wide apart, her white uniform skirt halfway up her thighs now. Joan gazed into the girl's crotch with burning eyes. She could almost see the outline of her cunt. As it was, she saw dark blonde hair curling from the tight panties, and that caused her emotions to flare with heat. The fact that her son was seeing what she was looking at caused her to tremble.

The office door opened and the doctor stepped out.

The doctor was an exceptionally beautiful woman. She had long hair, a deep auburn color, that swirled about her shoulders. She wore a white smock that hung to her knees, buttoned up. Her tits strained at the smock, but the material was too thick to outline her nipples.

"Ah, Billy," Doctor Nancy said, pleased to see him. "It's been six months already?"

Joan smiled nervously. She noticed the girl behind the desk didn't close her knees, or stop filing her nails.

"Is this your annual, or is something wrong?" Doctor Nancy asked.

"His annual," Joan replied, her voice oddly husky.