My sisters are 11 and 13 years older than me - 18 months apart. I used to believe that I would catch up to them and then we would all get older together.
A childhood belief about getting older

others believed things like this
- I thought that Dad's were always older then Mom's, come to find out my mom is a few months older than my dad.— Nicole
- My sister used to think that because I was 15 months older than her, I would die 15 months before her!— Nicola Braden
- 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
- I thought my grandad would get older, so I asked him 'What do you want to be when you're older?'.— Afterlife Dreamin'
- My brother that is 6 years younger than me used to believe that in seven years he would be older than me.Anon