i could swear eleventeen was a number for the longest time -- it still sounds pretty convincing.
A childhood belief about counting

others believed things like this
- I used to believe there was a number "eleventeen". I could never quite work out where it went, though.— Matthew
- when i was little i believed that your social security number was the number you were born on the earth — christine
- For the longest time I was sure my cat could read my mind.Anon
- When i was about 4 or 5, for the longest time, i believed that the preist of our church was god.— hunnybee
- For the longest time I thought 90210 was a sitcom Anon
- i thought that you had like a box or something inside you to hold your soul for the longest time— jill