When I was young, around 6 or 7, I saw my mum taking some tablets in the kitchen. I asked what they were (I was very nosey/inquisitive and liked asking questions) and she said they were to 'stop mummy from having any more babies.'
By this point I already had a younger brother and sister so had a vague idea of where babies came from, in that they came from mummy's tummy, but I had no idea about what daddy's role was in it all.
For years I was terrified that when a girl got old enough she would spontaneously start having babies and that you needed to take these tablets to stop it.
A childhood belief about family

others believed things like this
- When I was a kid, I used to think that tablets were sweets for grown-ups Anon
- I use to think that alka seltzer tablets were instant 7UP soda until one day I tested my belief. — aj
- i used to believe (when i was little) i could make the wind stop and start by saying, "stop" and "start"— Ali
- When I was young, I used to belive that
if you pushed the stop button in the bus it would stop for good.— Tom (Norway) - while my son was crying one day, my little brother announced that "babies cry to let off moisture". ha!— i'm laughing WITH you
- I used to think a female daddy-long-legs was called a "mummy-long-legs".Anon