I used to believe that when you had your first period blood would run out like it does on a sink.
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
- 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
- If you eat 30 minutes before swimming, you will sink.Anon
- i used to believe that a monster lived in the garbage disposal. i would never go near the sink— Whitney