I thought it was physically impossible to wet yourself once you were potty trained or wet the bed if you were eleven or older.
A childhood belief about weeing and pooing

others believed things like this
- When a soldiers went AWOL in the movies, I thought they physically climbed over "A Wall".— D Rumsfeld
- I thought the "physically fit" lines in the song "I Like to Move It" were "fizzy coloured feet".Anon
- When I was nine, I thought two eleven-year-olds could get married.Anon
- I used to believe that people only grew, physically and in age, on their birthday. — Aretia
- I thought it was impossible for anyone to lift more than their own body weight. Just seemed to make sense..— Xenomorph
- My brother used to be scared to poop in the potty. He thought that he was pooping out his bones.— Lillyth