I was 8 or 9 and angrily demanded to know whether it was true or not. My mother found the experience uncomfortable, because I was suggesting I'd be devastated if I found out I'd been lied to all these years but wanted to know the truth. She tried to suggest it wasn't lying, just a story, but to me it was black and white.

My Grandma once tried to suggest that I would only get presents if I believed in God, at a time when my sister was going through a theistic phase, because that was the reason for the celebration, the implication being that my sister should get presents and I shouldn't. I think at the time I found this blatant and ridiculous.