I used to believe that pee was stored inside your body in a cup, and if you had to pee really bad you should stand up very straight and walk very slow as to not "spill" any, which is what caused you to pee your pants.
A childhood belief about weeing and pooing

others believed things like this
- I used to believe that ants walked inside your body and that's what caused an itch.Anon
- I used to believe pee was stored in your stomach and poo was stored in your back.— Rob
- When I was a kid, I used to believe that when people died, they would stand up and walk to their own graves.— Mark (england)
- I used to believe in the 'little men' that worked inside your body.Anon
- I used to believe that when there was static on the tv, it would be showing the inside of your body.— Dr.Starr2.0
- I used to believe that the inside of my body looked like bologna.— Stephenie