Suddenly, right as the woman's moans were reaching their climax, there was a knock on the door. The woman froze, your mouth still pressed hard against her vulva as you gasped for breath against her tremoring body, cum spurting into your mouth.
"Mom? Are you in there?"
"Shit."
The mother quickly slid off of you, running over to where her clothes lay draped on the floor.
"Just a second, honey!" She called out.
She shimmied her way back into her pants and threw on a blouse, disregarding any undergarments to save time. Then she walked to the door, opening it. You were still lying on the bed, catching your breath, cum plastered across your face.
The woman opened the door to reveal a busty young version of herself, complete with all the curves but missing the slight wrinkles and sags the mother had.
"What's up, Val?" The mother said.
"I was just wondering if you'd seen my..."
Her voice trailed off as her eyes locked on you over her mother's shoulder. You blanched, still unable to wipe off the cum, as she stared at you and your open mouth. It was obvious what had just happened, and her eyes widened with shock.
"Mom, is that a..."
She didn't finish her sentence, but she didn't have to. The mother whirled around to see you still on the bed, realizing she forgot to hide you in her hurry. Her face went pale with embarrassment and horror.
"It's not what you think!"
"Listen Mom, you can do what you want on your own time."
"No, it's not... a woman has needs, you know."
"Ugh, that's disgusting."
With those words, Val walked away, leaving her mother still stammering for words. After a moment staring after her, the mother cursed and turned back to you.
"Well, the mood is ruined," she said almost to you, "I'd better wash up."
She turned to leave...