He grinned so adorably that Judy creamed her panties. She hesitated. "I just stopped in to see if Penny was sleeping and she's not there. Do you know where your sister is?"

At the moment Jimmy's cock was inside Penny's mouth. He stifled a groan. "I think she's at her girlfriend's. She said something about a pajama party."

"Oh, was it tonight?" Judy mused.

"Yeah." When Penny bit his cock, he almost jumped. "Well, goodnight, Mom," he croaked.

Judy felt annoyed. He obviously wanted her to leave. She forced a smile. "Goodnight, Son."

As his mother left, Jimmy breathed a sigh of relief. He held Penny's head under the blanket until he was sure she wasn't coming back. Then he whistled softly and threw the covers back.

"You can come out now," he said.

Penny giggled as she eagerly licked his cock. Her hands were all over his balls. She was a horny kid for her age. Man, how she loved to fuck.

"I thought she'd never leave," she said.

Jimmy couldn't believe his good luck. The first time Penny approached him he was horrified. But she managed to get his clothes off and the rest was history. Why fight a good thing?

Now she was sucking and licking his hot rod like there was no tomorrow. She liked sucking almost as much as she liked fucking.

For a kid she gave very good head. She could take his cock all the way into her throat without gagging. Most girls her age couldn't do that.

Now she clamped her lips around his cockhead. He barely breathed. It felt good, but he felt very vulnerable. Jesus, be was getting hard! His cock was swelling up and getting big.

"Jesus, Sis, what're you doing?" he hissed.

She had one hand inside his asscrack, exploring his shitter. He shuddered violently when she flicked her tongue against his bung.