She squatted over his thighs, her knees parted. Karen could look at her daughter's crotch, see the band of her panties stretch over her sweet little cunt. Robbie, too, was looking between his sister's knees.

"Feel it, Judy," he urged, making Karen place a hand over her lips to hold back a gasp. Her hand still had the scent of her son's cock and balls, and she inhaled deeply as she watched them, not once thinking to stop them.

Judy, with a breathless sound, closed her small hand around her brother's cock, loosely, lightly.

"Squeeze it, Judy!" Robbie moaned.

Judy squeezed, lightly, a low purr coming from her mouth.

"Squeeze it hard!" Robbie urged.

"Won't… won't I hurt it?" Judy asked in a shivery voice.

"No, squeeze it as hard as you can!"

Her small hand squeezed, making Robbie groan loudly.

Judy jerked her hand away, concern in her eyes. "I hurt it!"

"You didn't hurt it!" Robbie panted. "Squeeze it again!"

Judy's fingers closed tightly around his cock again, squeezing as tight as she could, a soft squeal bubbling from her open mouth.

"Rub it, Judy," Robbie instructed his sister. "Rub your hand up and down!"

Judy did, making little cries of delight, watching the smooth, swollen head of her brother's cock slide in and out of her small fist. Her little ass shook as she squatted over his thighs, her skirt hiked to her hips now, her slim thighs exposed all the way to her panties.

"It's so hard, Robbie!" she whimpered. "Doesn't it hurt this way?"

"It feels good when it's hard, Judy," he said. "It feels better when it's played with, nice and hard."

Karen was breathing deeply as she watched her daughter pumping her small fist up and down her son's cock. This was not supposed to be, she thought frantically. Judy was not supposed to be home, she was not supposed to be holding her brother's cock, jacking it up and down. She was supposed to be in school all day, and it was not yet noon.