Yes, Mom, do what Nana did for Gary

"How would you feel about that, Bernie?" Joyce asked her daughter about proposing to masturbate Gary.

Gary stood behind Bernie, facing Joyce, all of them naked under the gentle spray of the shower. Gary's erection nestled between Bernie's buttocks, having revived while he'd watched Joyce finger her daughter to orgasm. Bernie was still flushed and breathing deeply. Joyce had her usual serene, sweet expression, but the brown nipples tipping her large, soft breasts were visibly erect as she asked her question.

Bernie slid her wet shoulders to the side and turned in place to see Gary's face. "What do you think? You and my mom?"

"Y-yeah," Gary said. His cock throbbed between Bernie's buttocks.

Bernie smiled, nodded, and turned to lean back into Gary's chest. She nodded to Joyce. "Yes, Mom," she said emphatically. "I want Gary to see me get you off, and I want you to masturbate Gary like his grandmother did, and make him come."

"Well then, let's get dry and take this..." Joyce began.