At around age 11, I was at a friends house when I noticed blood in the toilet after her sister went to the bathroom. I was convinced that she was dying of some dread disease and said so to my friend. Then my friend informed me that it was from her period. Boy did I feel stupid.
A childhood belief about periods

others believed things like this
- My friend's mom told my friend's little sister thatI when a dog died, it went to a retirement home.— ellen
- my aunt used to have an imaginary friend who instead of having blood had 7-up in her veins.Anon
- I used to believe that all old people got the disease "OLD TIMERS DISEASE" Instead of alzheimers disease :D— MollyJohnson
- a friend was convinced that his school was an asylum, and couldn't be convinced otherwiseAnon
- 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