I used to believe that clothes with horizontal stripes were illegal, having heard them described as such on a daytime TV programme.
A childhood belief about appearance

others believed things like this
- I used to think that Legal and Illegal meant the same thing (illegal)— Dhruv
- I used to believe that zebras have detachable stripes.Anon
- ... i used to believe the more stripes my pair of sneakers had, the faster i would run ...— wilbur
- I wouldn't wear stripy socks because I used to believe the stripes dug into your feet— Shirley Reeves
- Me & my brother used to think that the science programme QED was called "KWED" rather then "KYOO EE DEE".— Richard Davies
- I thought that the stripes of the zebra crossings was from a squashed zebra— Helen