I know someone who said that when he was younger, he thought that condoms were for getting the baby you wanted, in the sense that you flicked a switch to "boy" if you wanted a boy. And you flicked a switch to "girl" if you wanted a girl. And if you wanted twins you would flick a switch to "Twins"
A childhood belief about condoms

others believed things like this
- When i was younger i thougth that when you grew up you could decide whether you wanted to be a girl or a boy. Anon
- That you could give birth to what ever you chose (i.e a girl, a boy, twins, triplets)— Krista Durling
- I remember a girl in my kindergarten class told me she wanted to be a waterfall when she grew up.Anon
- I used to believe that I really COULD be anything I wanted to be when I grew up. I wanted to be a unicorn. Anon
- I used to believe that there was an off switch to the ocean so that it could go to sleep at night.Anon
- I used to belive that if we could find the light switch that controlled the sun, we could control the world. Anon