my older sister gave me lots of phobias! one was the monster under the bed. so to avoid him i'd run from one side of the room and jump onto the bed. fine unless you have bunk beds - and i had (the bottom one). i only stopped once i'd knocked myself out about a dozen times.
A childhood belief about under my bed

others believed things like this
- a friend of my little sister's had 4 older brothers, so she thought that when you got older you grew a penis!Anon
- when i was really young, i couldn't figure out why i can't get older than my older sister.— angela
- My Sister And I Used To Believe That If You Said Something 3 Times You Would Tern Into That.
— Jason - I used to believe that if you jumped off the top of a bunk bed, you'd magically gain superpowers.Anon
- I used to believe that when people were knocked out, they were dead.Anon
- My older brother used to tell me that if I "untied" it, I'd fly around the room like a balloon. — Gullible youth