"I don't want him to shoot it down my throat," Sally said.

"I'm not gonna do that, Sally," Bob replied. "But what you and Mom are doing to me… I can't help it. I can't be still."

"Well, don't shove it in my mouth," Sally warned, and placed her lips back around the head of his cock. She found it pleasant, the way his smooth prickhead fitted her lips. She discovered she could lick it as she moved her lips up and down slightly.

"Ohhh, it is good," she mewled, taking her mouth off. "I could learn to love sucking cock, Mother."

"Well, some girls learn," Marla said. "But that's all they learn, the skill. But to do it well, you've got to love it from the very first, otherwise no matter how good you can suck, it just isn't the same."

Bob lifted his crotch. He didn't want to hear any more of this; he wanted somebody to suck his cock. By now it was throbbing with full hardness, his cock head very swollen. His balls felt loaded again.

"Mom, suck it again!" he urged.

Marla squeezed his balls. "Both of us will suck it, honey," she said. "Your sister and I will suck your cock. Would you like that?"

"I don't care who sucks me," Bob answered. "I just wanna get sucked, Mom."

She lowered her face and closed her lips about his cock, sucking it into her throat. Sally watched, making soft sounds of delight. Marla held Bob's cock deep in her mouth a moment, then sucked upward, dragging her lips over his cockhead slowly, her tongue flicking.

"Want to try that, Sally?"

"I don't know if I can, Mother," Sally replied, her eyes shining.

She pushed her lips over her brother's cock, and as she pulled half the hardness into her mouth, her eyes glazed. Sally found the throbbing heat of her brother's cock in her mouth delicious, and just as her mother had said, her mouth became very watery.

She took in a deep breath. She choked with a dainty sound when the head of Bob's cock probed her throat, and she sucked upward quickly.