"Well, Aunt Karen," Stacy said impishly, "have you changed your mind? Do you see it our way now?"
"Yes, I do," Karen, said shyly but sincerely. "I think this is going to save our marriage. That is, if you kids don't mind making it with a pair of old codgers like us."
Stacy eyed her uncle's long thick cock, and Mark cupped his aunt's huge hot tits. "We don't mind," he said earnestly. "We don't mind at all…"