I used to believe that every woman had a period one time only, when she was exactly 20, and it was peeing out blood.
A childhood belief about periods

others believed things like this
- HA! I used to think when you got your period, you would just pee blood...I wish it was like that...if only.Anon
- I used to believe period blood came from the nipples. I thought that was what "padded bras" were for!!Anon
- I remember drinking red kool aid and peeing at the same time. I was expecting it to be red.Anon
- Every time it thundered and rained I used to believe that God was passing wind and "peeing"!Anon
- when I was young, I heard that blood had iron in it. I thought blood was red because it was rusty.— Hunter
- I thought that your period came out all at once and you had to wear a pad around the time it would come.— Sarah