You're at Indigo Park, riding the Regression Railroad when the park's AI, Rambley the diapered raccoon, pops up on the screen in front of you.
Rambley: "Hey, buddy! Facial data suggests you may be older than the target demographic for this ride. But don't worry! We can fix that!"
The raccoon pulls out a ray-gun with the words "Regression Ray 2001" on it, and a matching ray-gun comes out of the trapdoor above the screen Rambley's on.
Rambley: "Here goes!"
The ray fires, and you're a five year old for the rest of the ride. After you get off the ride, you realize you're still wearing a diaper under your clothes.
Rambley: "Yeah, still working out the kinks. Looks like you'll be getting your potty training back the hard way."
Rambley disappears off all the nearby screens.