I thought the human body was essentially hollow and when you ate, the food went all the way down to your feet and started taking up space. When it got all the way up to your neck, then you'd throw up.
A childhood belief about eating

others believed things like this
- I used to believe that cow udders were hollow bags full of milk.Yet I knew that human boobs were solidAnon
- I used to believe that a 'soul' was an organ of the human body, such as a kidney or lung. — Grace
- I use to believe that all the food you ate went to your feet.— Honz
- I'm autistic, and I used to believe taking some of my sister's food while she was eating it was sharing.Anon
- I used to beleive, that if you swallowed a seed the food would grow in your body.Anon
- I used to think that when people were taking their contacts out that they were taking their eyeball out :) — Jen