For just a moment she felt a slight shame, but it evaporated quickly. She noticed the front of his pants, and understood that he enjoyed what he was looking at. His cock was almost hard, his hand inside his pocket trying to conceal it. A fierce, burning sensation ran through her body, roaring between her longthighs, her cunt almost exploding. She stood rigid for a long, breathless moment, looking at his cock and understanding the desire he showed in her body. Excitement filled her stronger than ever. Finally she managed to turn and start down the aisle again, knowing her son was gazing at her ass.

By the time they had gone through the check-out counter and loaded the car, Susan was so agitated with desire she thought she would come. Sliding under the wheel, with her son at her side, she could not resist running a hand along the inside of her creamy thigh. Seeing that Billy saw her do this, she giggled and stuck her tongue out at him.

Billy blushed slightly, but watched his mother's hand move along her thigh, then to the steering wheel.

When they arrived home, Susan knew that Billy had a throbbing hard-on. It was standing against his pants in full outline, and she loved the sight. Even the head of his cock was outlined, and she was surprised to see it was larger than she would have thought.

As they unloaded the car, Susan allowed the back of her hand to brush over his hard-on. She heard him gasp, and looked at him to see what his reaction would be. What she saw was a burning need in his young eyes.

Once things were put away, she opened two frosted cokes, handing him one. She leaned against the sink in the kitchen and stared openly at her son. "Where did Karen go this morning, Billy?" she asked.

"She didn't tell me," he replied, his eyes on her swollen tits.

"Did she say when she would be home?" Susan asked in a low, husky voice.