I used to think that a vegetarian and veterinarian were the same thing. That since you worked with animals you didn't eat them.
A childhood belief about general

others believed things like this
- Up until I was 10 I used to believe turkey was vegetarian.Anon
- I used to belive that all animals could talk but just didn't want to aroung people!— Mallory
- I used to beleive in stores that were open 24/7 , that the people that worked there worked 24/7 nonstop.Anon
- I used to belive that employees who worked at 24/7 shops lived there and never slept!(they worked 24/7)— tilly Waukesha WI
- I didn't know Reindeer existed, I thought they were just christmas animals for storiesAnon
- I thought if someone worked full time it meant they worked 24/7 and never did anything else!— andalite