In the pool, Sharon and Jimmy splashed back and forth across the water, shouting in glee. Sharon was irritated that she had to wear her t-shirt. It wasn't fair that she had to wear a top and Jimmy didn't.

However, the t-shirt, once wet, clung to her burgeoning tits, exposing them through the shirt. Her sweet, pink nipples could be seen, stiff and pretty. The t-shirt molded her small tits like a glove. Her shorts, too, became transparent, but it was hard for Jimmy to see much. Her cunt hair was so golden and light, it didn't show. All he saw was a faint shadow between her thighs when she was out of the water.

They played in the pool until their mother called them in.

Kathy had dressed in a becoming, cool, summer frock, a pale yellow that set her auburn hair and green eyes off beautifully.

"I'm going out for a while," Kathy said. "And I want you two kids to be good, you hear?" She handed them some money. "You can have something to eat at the cafe. I should be back before you go to bed."

"Who you gonna see, Mother?" Sharon asked. "That man with the tow truck?"

"It's none of your business," Kathy replied. "But, yes. We're going to have coffee and talk about, that damned car."

"How long are we gonna be here, Mom?" Jimmy asked.

"I don't know," Kathy said. "I hope we can leave tomorrow."

She kissed them on the cheek, warned them about being good again, then left.

It was after she had gone that she remembered Sharon's pretty little tits were showing through her t-shirt. She hoped they wouldn't get any naughty ideas. They were too young, she thought, to think about such things.

Sharon and Jimmy stood facing one another, giggling together. Jimmy stared at his sister's tits, his cock swelling inside his shorts.

"You wanna play, Jimmy?" Sharon asked.

"If you wanna," he answered.

Sharon lifted the leg of his wet shorts. Seeing his cock jut out, she giggled wickedly, then yanked his shorts down before Jimmy knew what she was doing. They hung at his knees, his cock and balls showing.