I believed that I was mentally deficient and everyone was just being nice to me. I thought that my parents warned anyone that I met just before I met them so that they would pretend to treat me normally. I spent ages scouring my school signs for anything that might suggest I was right. I was mostly convinced when I got 5 As and 4Bs at GCSE, but still consider the possibility when I am having a particularly paranoid moment, hehe.
Not quite sure how that belief came about, I don't think I was particularly paranoid about anything else.
A childhood belief about i'm different

others believed things like this
- I spent ages wondering what a bart ender was as a child without realising that it was actually bar tender.— Heather
- When I first went to School, I thought it was like hell. It's not as a bad as I thought, heheAnon
- I thought being mentally challenged meant you couldn't do any challenges with peopleAnon
- a friend was convinced that his school was an asylum, and couldn't be convinced otherwiseAnon
- Having seen enough red octagonal STOP signs in my time, I used to look out for green circular GO signs.— Gary
- We told our little sister that she had a long bushy tail and she fully believed us for ages!!Anon