The next day Kathy found herself wondering why she agreed so readily to stay with Robert and Cindy again. She had not enjoyed being tied up, but she had enjoyed watching them fucking.

Her cunt was a bit sore, now. After she had gone to bed the night before, she was so aroused she finger-fucked herself until she came a half-dozen times, thinking about Robert's cock thrusting in to his sister's blonde, almost-hairless cunt.

She spent the entire day thinking about them, and Robert's cock and Cindy's cunt was always in her mind. She found herself anxious for a call to baby-sit them again.

It was two days before she received a call. When it came, she breathlessly agreed to spend the afternoon with Robert and Cindy. After the call, Kathy bathed and scented her slender body, feeling anxious. She looked at her reflection in the bathroom mirror.

She was an exceptionally beautiful teenaged girl. Her dark hair was almost black, swirling about tanned shoulders. Her eyes, dark also, were wide and bright. Her nose was small, and her lips were full and moist. Her tits, flawless in their pointing shape were creamy with the light-brown nipples. Her stomach was flat and her waist small. Her hips curved gracefully into long, exciting thighs. Kathy's ass swelled out in a delicious, provocative manner, the cheeks very smooth and unblemished. Her ass cheeks swelled out in sloping delight, then tucked sharply to her tanned thighs. The crack between the chocks was warm and tantalizing to look upon.

The dark curls that framed her aunt were thick and long. A very thin line of dark hair grew straight up to her dimpled belly button. The silky strands dipped between her thighs, still long and curly along the lips of her cunt. She knew, from experimentation, that her asshole had a few hairs growing around it, too.