I used to believe that lemon limes where real. Yellow on one side and green on the other. (from the sprite comercials).
A childhood belief about general

others believed things like this
- That limes were unripe lemons— Alan
- I used to think that limes were lemons that weren't ripe yet.Anon
- I used to believe that if you mixed red, blue, green, and yellow paint you'd get plaid!— Judith Ann
- i used to believe that red yellow and green meant "ready, set, Go!" on traffic lights..— cabagona
- I used to believe that comercials are evil beings that would keep appearing until you bought the product.Anon
- I used to believe that putting lemon juice in yours eyes could lighten them.Anon