Tell her to get ready

Your sisters weren't due home until tomorrow - some party at a friends - so you were both by yourself, in an isolated house, with nothing but each other.

There was no way you weren't taking advantage of that. You look your mother straight in the eye as your heart beats faster at the idea of what you were asking her to do.

"Mom, go to your room and dress in your sexiest underwear. Then pose seductively and wait for me to get there."

Your mother giggled. "Sounds like fun, dear. I'll see you in a minute." She walks away. Taking a moment to calm your nerves - surely enough time for her to get changed - you drink a glass of water, pinch yourself, and walk upstairs after her. You open the door, and see your mother lying on the bed, a lace red bra that left her nipples clearly visible and a tiny pair of lace panties on as she sat there and wiggled her finger at you, biting her lip. You could see a few stretch marks, but other than that her skin was still flawless.

She was sitting there, waiting for you, completely obedient. Now it was up to you.