I used to believe that twins were created by having sex really fast, two times in a row. I believed that until the age of about 27....I'm Catholic...go figure!
A childhood belief about getting pregnant

others believed things like this
- i believed if you had sex twice in a row you would have twins— dona
- i always thought twins had the same name as each other— Elle
- I used to believe that twins were always identical.Anon
- My friend used to think that having a threesome would mean you would have twins.— Yank
- i used to believe i would 'catch up' to my big brother one day and we'd be twins.— lil' sis
- I grew up Jewish. Until I was about 10, I believed that everyone who wasn't Jewish was Catholic.— Philm35