I once belived that anything liquid that you ate, such as soup or a drink, would become crap, and all other food would become urine.
A childhood belief about weeing and pooing

others believed things like this
- I belived that when I took a crap, my turd(s) would turn into snakes and bite my booty.— Butters.
- I hated french onion soup so my dad told me that it was banana soup and i lapped it up for years.— AussieMeg
- i knew that if you ate beets your urine would turn pink and i thought if it was pink, then you could drink it.— JP
- I used to think that if you mixed a diet drink with a regular drink, it would explode. Anon
- I used to think Tomato soup was Lava.— Daniel Green
- I used to think soup actually made you grow up.— Marie91