My parents used to tell my brother and I when we were little that we had 'baby heads' and that one day they would fall off and our 'permanent heads' would grow in their place. Periodically they would shake our heads and say "yep, it's gonna come off any day now".
Explains a lot about me.
A childhood belief about general

others believed things like this
- I used to believe that heads of state had diferent kinds of heads on their shoulders— stupid elado
- i used to beleive everyone took their heads off when i turned away from them.Anon
- I used to believe nun's shaved their heads and were completely bald.— Mark
- I used to believe there were calves' heads in those cans of Pet Milk.— Ron
- when i was little i thought people with big heads or big noses had cancer...Anon
- I used to believe that when people got shot in the head that their heads would blow up. — Emily