I believed the urinals in port-o-potties were sinks.
A childhood belief about general

others believed things like this
- I was convinced that hot air sinks. Why else are mountain tops cold, and Death Vally is so hot?— Not-my-wife
- I used to believe that "pork chops" were called "port chops", and came from the left side of the pig.Anon
- I always believed that my dad went to school with Billy Bunter. I think my brother believed it too!— Karen
- When I was 4 I believed I was a dog— Henry (the hound)
- I Believed in ET— Gabriele-Brazil
- I believed you could sit on clouds. Anon