Your mom looked at the time and realized that it might be too late to put on clothes. She began to undress, you felt yourself shift against her thighs when she took off her yoga pants. You were exposed to the air again, familiar with the slight breeze against your new lips. Mom took off her top and her large boobs were freed from her bra. Mom preferred to sleep naked in her luxurious bed.
She collapsed onto the bed, and got under the covers. Mom got comfortable and started to yawn, turning left and right until she got continually more tired.
For some reason, you couldn't sleep, and you weren't even sure if you could. Mom soon fell into a deep sleep, snoring in the process. all you could really see was her smooth thighs and her sex toys scattered across the bed. It was like this for a while, until it started to get dark. Ever since the Chronivac turned you into Mom's pussy, you gained strange feelings. Your inner walls felt empty, and you just kept twitching for attention, craving something.
Your thoughts were disrupted when you heard the creak of a door, and footsteps approaching the bed. Uncovering the sheets, and getting closer to you. You got nervous, but also felt somewhat excited. A hand slowly made its way onto your mom's plump asscheek, parting her cheeks to give the penetrator a clear view of her fresh, taught vagina, unaware that you now inhabit it. You were met with boxer shorts that slowly peeled down, revealing an large, hairy, erecting cock. It dripped precum out of its urethra, and off its foreskin. Its presence seemed threatening, almost like a monster. The musk made you hungry for it, and you immediately lost your track of thought as soon as it got closer, wiping up against you. You could barely contain yourself as the beast plunged inside you.
You first tried to block it out, but you weren't strong enough to withhold the penis. It eased in and you worked the penis, clamping it tighter as it got deeper and deeper. The penetrator's grunts became slightly louder with each pounding. "Damn thing has got a mind of its own..." quietly grunted the penetrator, pumping faster and faster inside you while you get more moist and sweaty. Eventually the slaps against your moms fat ass becoming more audible, but not loud enough to wake her. The final thrust came with a moan, and a whimper from your mom. The penis stayed inside you for 20 seconds, coating your flesh walls with ropes of salty cum. You felt a warm tingling sensation for a moment that quickly went away, and you wondered what it was. Your mind was totally blank.
The giant penis slowly pulled out from you, hearing heavy breathing from the man, while your mom was still snoring. You were now full of his cum, twitching endlessly. Your anus neighbor doing the exact same pulses. You tried to gag out the cum as it flowed out of you, but to no avail. His hand left your moms asscheek, and you were put back into the darkness again. You felt strangely satisfied with fulfilling your purpose as a vagina, even if its your own mother.