I used to believe that the kidneys are showers for the red blood cells; the water we drink washes the blood cells to clean them and the sewage goes to the bladder.
A childhood belief about general

others believed things like this
- That by drinking a daily dose of buttermilk one would clean the blood thereby avoiding ACNE— Richard in Durham
- My brother used to tell me if I picked my nose I would become more stupid because bogey were brain cellsAnon
- 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 - When I was a kid I took two showers becaue I thought my hair was a plant and needed the water to grow— Tim