I heard it through the grapevine...
Not much longer than the pea vine...
(I believed it was comparing vine sizes...)
A childhood belief about misheard lyrics

others believed things like this
- whenever i heard a melody, i thought it stuck in my stomach when i heard it in my mindAnon
- When I first heard of Amsterdam I thought it was "Hamster's Den"— Bootlebat
- The first time i heard of someone getting fired from a job, i thought that they were actually set on fire.Anon
- When I was a kid I heard that the Beatles did acid and I wondered if they melted from it.Anon
- I once refused to believe in Thursday. I'd heard there were seven days in a week, but could only name six.Anon
- I used to believe in ghosts because I always heard noises comming from the cellar.— Sabrina