When I was little my mom used to donate her blood and in 1st grade I learned that your body is always making new blood. This lead me to believe that unless you give blood regularly your body would make so much that you would explode.
A childhood belief about general

others believed things like this
- I used to think that instead of bones and blood and tissue that you body was made up of tuna.— m.n
- when I was young, I heard that blood had iron in it. I thought blood was red because it was rusty.— Hunter
- I used to believe that guns shot out blood because everytime somebody shot a gun in a movie you saw blood.Anon
- when i was litte
I used to believe that white people had white blood and black people had black blood.Anon - I used to believe that milk was cow blood. — Stephen
- I used to believe that if you drank vinegar that your blood would dry up.— Emily Hughes