Then Marla screamed. Bob and Sally darted away from the door swiftly, making a great deal of noise.

But Marla was seized by her fiery orgasm and didn't hear them. Her legs became weak, and she finally squatted above the mirror again, gasping heavily, her finger no longer inside her cunt. She watched her pussy pulsate and drip for a while longer, letting strength return to her shaking body.

Marla had not given much attention to her son and daughter in the past few months. She noticed nothing, really. Her fantasies took up most of her time, and even when Bob and Sally were around, watching television or playing some game, she was hardly aware of them.

But this evening, she noticed they weren't around and she became curious.

She heard their voices from Sally's bedroom. Sally's door was closed, and Marla pressed her ear to it.

"Sweet pussy," she heard Sally saying.

A flush came over Marla's face. It was not the flush of shame or embarrassment, but the flush of quickly rising desire.

"You're supposed to wiggle, Sally," she heard her son say.

"Okay," came Sally's voice.

"Now you say it." Bob said, his voice low. "Sweet pussy," Marla heard her daughter's voice. "You hot, sweet cunt! You need a hard cock, you hot cunt."

Marla turned the doorknob and pushed the door open.

Sally was standing over a hand mirror similar to her own, with her dress about her waist. Sitting on his sister's bed, Bob was watching. Sally's tight panties clung to her ass, and both she and her brother were looking at the reflection of her cunt, only Bob was lifting his eyes to the front of his sister's panties as often as he looked into the mirror.

Marla's hand moved to her throat, her eyes wide. She saw the bulge of her son's cock inside his pants, and there was a lurching, sucking feeling in her cunt.

Bob jumped, seeing his mother in the doorway.

Sally turned quickly, shoving her skirt down as she faced her mother.