For me it was that I suspected I was the robot. Never told anyone though.

I ocassionally entertained ideas like that in the back of my mind. Truman Show, Teachers are aliens, Parents somehow know everything/ everything about me and are just fucking with me in the way that Zeus would to test character, except over a much longer Santa Clause/ Jesus esque period of time, the mothman is watching me, there are invisible monsters/ demons all around me and I need to be very sneaky not to be seen.

I'm not sure I believed them, exactly. Maybe I did. Maybe I didn't. I still do the same stuff sometimes, with equally wierd things. Whenever I start half way believing in god or track of thought in my bain giving arbitrary commands is the voice of God, I just start doing experiments against the rest of reality til the shadow of belief goes away, since they never line up with testable reality. I've never had actual hallucinations, though, as far as I know.

Hehe...to be honest I half-believed those too...not that everyone was a robot, but that everyone was a philosophical zombie. It wasn't until high school that I figured out that for all intents and purposes, I'm a philosophical zombie too.

But in my opinion, those really ARE normal childhood beliefs that are not the result of any neuropathology... beliefs that many philosophers still entertain in the form of solipsism.

Some strangely common childhood beliefs:
Everyone except you is a robot

Do those turn into these when they grow up?