You open the door and walk in, everyone is smiling at you, not laughing but when they notice your gaze, they look away.
The teacher asks you how old you are and you say "15.", unaware of the changes that are happening, not noticing that you should really be 18. She asks "Timmy, do you need to go potty?" To which you answer "no."
30 minutes later...
You are playing with the toddlers, not noticing that you are six years old, as it feels normal to be so young. Suddenly, the teacher asks you to come to the bathroom. Then she tells you to sit down on the table. What she plans is that by the time she gets back you will be 2 like everyone else
When she gets back...
She looks at you and asks you why you arent wearing a diaper. You are short of words as your two year old mind takes over, also wondering why you arent wearing a diaper.
She puts the diaper on you and takes you out to the other toddlers, who are wearing unexposed underwear or training pants, while you are wearing a diaper, with nothing covering it.
The kids ask you if you know what 5 times 5 is, your mind struggles to contemplate the equation, you accidently poop your diaper while you are thinking. One of the kids goes to the teacher to report the situation, you havent even realized that you have pooped. You went to the drawing table and sat down and felt the crap press against your skin.
The teacher gets there and puts you on a changing mat.
The teacher says "who wants to change him?"
If your older mind was still around, it would ask "thats why I am here?!?, to be educational aid?"