I thought that olives grew with that red pimento already in them. Then I somehow rationalized that as they ripen the red pimento became a pit. That's why black olives sometimes have pits.
A childhood belief about general

others believed things like this
- my dad once told my bother and i, that olives with pimento, were fish eyes. — jocelynn
- A friend of mine thought that some olives grew with red edible pits (pimentos).— HA
- I thought the Mountain of Olives was made out of Olives— Tanuki
- I used to believe that black olives were made out of whale skin.— Troyson
- I used to believe that if you swallowed cherry pits, you would have a tree growing in your stomach.— porkchop
- I thought black people were black because they drank chocolate milk. — Shelby