When did you first realize?

I remember drawing a picture when I was a little kid, crayons on construction paper, and showing it to my mother. She didn't ask me what it was. She took it from me and turned it around and proceeded to show it to me and tell me what it was, as if she had drawn it. I remember thinking something along the lines of "what the hell, I know what it is, I just drew it" and also "this is not how the teachers at school behave, this is different, this is strange".

Edit:

This was not the moment that I said "my parent is a narcissist". That was many years later, as an adult. But looking back, this is the first instance I can remember when I noticed that something was fundamentally wrong, though I didn't know how to explain it at the time.