Donna glanced behind her where her son trailed.

She saw the sheen of sweat on his upper lip, and excited expression in his eyes. She knew why he liked to ride behind her. She knew Tommy enjoyed watching the rhythm of her firm ass on the saddle. Like her son and the man ahead of her, she had on a T-shirt, and her tits pushed against it, her nipples two dark circles behind the thin shirt, poking out stiffly.

The man and girl were pedaling faster, and Donna watched them disappear around a bend in the trail. A moment later she and her son came around. The man had stopped his bike about five feet from a drinking fountain, and his daughter was just sliding off her bike for a drink. Her skirt caught on the seat of the bike, and as her slim leg lifted over the center bar, there was a flash of her tight, pretty panties. The girl giggled as she pushed her dress down.

Apparently the man and his daughter had not seen Donna and her son. He held his daughter's bike by the handlebars as he straddled his own, and Donna's breath caught when she saw the man lean over and run his tongue over the seat of his daughter's bike, bringing another deliciously wicked giggle from the girl just before she got a drink of water.

The man saw her then, and a slight flush came over his face. Seeing him blush made Donna more attracted to him than before. That blush showed he was human. She flashed him a bright grin, her sparkling white teeth showing.

"Hi," she said cheerfully as she drew up next to him and stopped, a long leg resting on the ground as she balanced her bike. "I've seen you riding around here before, haven't I?"

The man nodded, his flush fading as he took in Donna's tall, slender figure, her wide-spaced, brown eyes, the shimmering chestnut-colored hair that was slightly mussed about her shoulders. He saw her wide, full, moist lips, then he lowered his gaze to her straining tits, seeing Donna's nipples push boldly out, the rounded, firm shags of them almost revealed under her T-shirt. Then he looked at her hips and her long legs.