I thought that McDonalds were built over underground ketchup deposits, and the little ketchup pumps went underground.
A childhood belief about general

others believed things like this
- When I was little, I thought ketchup came from ketchup trees— cristina
- i used to believe ketchup was blood and refused to eat it with anything Anon
- I used to believe that ketchup was used to make fries colder so they would be easier to eat.— Amber
- I thought the underground railroad was actually a subway.— Greg
- When I was little I thought the london underground was a terrorist organisationAnon
- Until I was in High School, I really thought that the "underground railroad" was under the ground.— S