Jimmy leaned across his sister and switched off the bedside lamp. He fell back on the pillows, pushed the covers back and reached out for Penny.

Giggling, the little teenager snuggled close to her brother. She wriggled down until her face was in inch from his prick. He snickered as she made a grab for him, but didn't object when she pushed her face against his cock and balls.

In the weeks since she'd lost her cherry, brother and sister had been fucking regularly. Penny enjoyed fucking Billy, but she preferred Jimmy. The two years difference in their ages made a difference. Jimmy was more mature somehow.

Now he lay very still, eyes closed and hands folded on his chest. Both youngsters froze when they heard the voice in the hall. Penny scooted under the covers when the door opened a crack.

For a moment panic gripped the boy. He closed his eyes and pretended to be asleep, then changed his mind. "Hi, Mom," he yawned when Judy poked her head in the room.

"Sleeping already?" she said.

"Yeah." He rubbed his eyes. "Have a good time tonight?"

"It was okay." Judy had been to a neighbor's open house. "I missed your father though."

"Dad working again?"

Judy's lips tightened. "Yes."

The blanket stirred and the boy quickly sat up. "I guess I'll read a while."

"Is everything all right, Son," Judy said softly. She still craved her son. He never knew she'd sucked him off in the still of the night and she still ached to fuck him.

Penny squeezed his cock under the covers.

"Yeah, fine, fine," he said, feeling his face redden in the dark.

"Are you sure?" Judy said, opening the door wide and approaching the bed.

Jimmy sat up and widened the spread of his legs to hide the outline of his sister under the blanket. "Yeah, I'm okay, but I'm bare-assed under here."