When I was a child I believed that a woman's breasts got larger and larger gradually during their entire lives starting at puberty. I just assumed I would have "big" boobs by the time I was 30 and enormous ones by the time I was 70. Maybe because my rather young mother had a small boobs and my great-grandmother had huge ones..?
A childhood belief about general

others believed things like this
- I used to believe that wearing a bra that was too small would make my boobs get smaller.— Aretia
- When my brother was little, he believed that girls peed out of their boobs.— Emily
- Since lions and tigers are larger versions of cats, I used to believe bears were large dogs— Chris Ayala
- WHEN I WAS LITTLE I USED TO THINK THAT GIRLS GET BOOBS BY ONE DAY GOING TO SLEEP AND IT JUST HAPPENS— J.C
- My friend told me you have to drink milk to get boobs LOOL— Roxanne
- I used to believe that if I fell asleep lying on my front that my boobs wouldn't grow. And they didn't.— Booey