*Ding Dong* went the doorbell as Jeff pushed it. The door opened to show his girlfriend mother Sarah open the door who looked unamused. She didn't exactly like Jeff and was about to tell him to scram when Jeff used the Chronivac and changed a number 40 to a number 12. Reality altering as wrinkles, and maturity faded. A Milf regressing into a bud of a buxom maiden, She stared up at you still not liking you but with not enough authority to tell you to go away.
She was kinda cute as she was pouting and yelled into the house "Jenny, Jeff's here!" and then closed the door in Jeff's face.
A minute or two later Jenny opened the door "Sorry about that, little brat's just jealous of the time we spend together." you nodded as Jenny saw the chronivac in your hands and asked "What's that in your hands?"
"Eh... just a little fidget tech gadget. Not really designed for fidgeting, but it's neat to press the buttons and occasionally see what comes up." Jeff lied. Jenny shrugged and brought him inside to the living room and Jeff took a seat on their sofa as Sarah went to start boiling some water for some tea. Jeff "fidgeted" with the chronivac some more as he looked back to see Sarah's facing him while filling up the tea kettle. Then Jeff went for the chronivac to practice your alphabet skills. A, B, C, D, E, F, G... then she turned around as her newly formed cleavage jiggled as she turned around to turn the stove on, and wiggled her hips a bit as she hummed. Said hips were wiggling as they were widening further and further as that bony butt gained more flesh as it jiggled. She then came to the couch and sat next to Jeff, his girlfriend now having a very significant hourglass figure. The only hint that anything was off being the erection in Jeff's pants.