Debby shivered a bit, probably because the air was chilly, and snuggled closer to her brother.

Then Rebecca started to be naughty…

"I'm glad you didn't forget our date, Harry," she said. "I've missed you a lot since you moved away."

"Yeah, I missed you, too, kid," Harry replied.

Rebecca was the sort of girl that any guy would miss, in fact. She was gorgeous, with big, thrusting tits and curvy hips. She had long, black hair, so straight it looked as if she had ironed it, and jade-green eyes that smoldered like melted jade when she was aroused. She enjoyed teasing guys by using dirty words in their company, but she was, in fact, anything but a cock-teaser.

"What about this new boyfriend of yours?" Harry asked.

"Tommy? Oh, he's okay."

"Yeah? You screwing him?"

"Naw. I let him feel me up and I play with his prick sometimes. Just fooling around, you know?"

Harry grunted.

"I like to fool around, remember?" she added.

Tommy could see them whispering together, but couldn't quite make out what they were saying. He leaned forward in his seat, and his hand slid lower so that his sister's nipple was in his palm. That tit-tip was stiff and swollen, he realized. But that, too, was probably because she was cold, he reasoned. After all, there was no reason why she should be getting horny sitting with her own brother, was there?

"Wanna fool around now, Harry?" Rebecca asked.

Harry grinned. She hadn't changed. He reached across and drew the zipper down the front of her padded jacket. She was wearing a thick sweater, molded to her fat tits. She arched her slender back, thrusting those big tits out.

"Feel my tits, Harry," she rasped.

Harry grinned, and placed his hand on her tit, kneading her firm mound and pulling at her nipple.