So I'm male, when i was around 7/8 my older sister(13) convinces me i was going to start having periods when i was 18. I had no idea what they were but ran to my mum crying all the same
A childhood belief about general

others believed things like this
- I thought the word mailman was male man and it seemed dumb to me as aren't all men male?— andalite
- a friend of my little sister's had 4 older brothers, so she thought that when you got older you grew a penis!Anon
- when i was really young, i couldn't figure out why i can't get older than my older sister.— angela
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- My sister and I thought cats and dogs were the same animal, the dogs were male and the cats were female.— Paul
- My oldest sister is 15 years my senior. I used to think that she was older than my mom.— Callie