I used to believe boys could have periods after hearing about them from a girl in class.
I asked to be excused to the nurses office by my teacher one day cause I was having a bad stomach, when she asked if I had eaten anything bad.. I replied "not really, I think I must just be starting to have my first period" she looked back at me, a 9 year old boy trying very hard not to laugh.
This memory still haunts me to this very day.
A childhood belief about periods

others believed things like this
- When my mom was a child, she thought that while girls had periods, boys had hemorrhoids!Anon
- I once asked my CCD teacher if eternal bliss in Heaven would get boring after a while.— Some Dude With A Name
- For years I thought that spunk was a male period and that boys spunked once a month - Yeah right!— Stupid Child
- when asked what i would like to be when i grew up, as a girl of about 5, i answered "a horsey".Anon
- I actually asked my mother if mixing girls' poop and boys' poop would cause an explosion.— kraine
- when i was a little girl i asked santa for a penis for christmas. i thought it was a really awesome toy. — haha