My dad misunderstood the lyrics for "This Land." He used to think it was:
"From the Redwood Forest to the Ghostly Waters"
Rather than:
"From the Redwood Forest to the Gulf Stream Waters"
He sang about the Ghostly Waters until he was 40. As a kid, he even spent hours looking on maps for the Ghostly Waters.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that Canada was a territory of the U.S. and was one big forest.Anon
- I was very young during the first gulf war and I thought that it was fought in the gulf of mexico.— Kay
- Until I was about 13, I believed that the Gulf War took place near the Gulf Of Mexico.... — D
- I believed that if I swallowed my phlegm I would die. I spent hours spitting it out into the toilet.— chunky munky
- I used to think that
"The land of make believe"
was
"The land of baked beans."— Baked Bean! - Billy Squire sang about "My Kind of Lover". My wife sang about "My Candelabra"— Wailerman