My mom, one of the funniest people ever, is a boundless resource of misheard lyrics. Here are two of my favorite of her "mishearings":
" . . . the girl with colitis goes by" ("the girl with kaleidoscope eyes," from "Lucy in the Sky with Diamonds," by The Beatles)
"Little darling, I feel like ice cream slowly melting" ("Little darling, I feel the ice is slowly melting," from "Little Darling," also by The Beatles)
A childhood belief about misheard lyrics

others believed things like this
- I thought that the line was "Lucy in the Sky with Linus" (not lucy in the sky with diamonds)— Forrest
- When my friend told me her cat was moulting I thought she said melting. I was confused for a while.Anon
- When I was little, I thought the Beatles really were bugs.— Spongekid
- Every old person I met smelled bad, and I thought old people smelled bad because they were slowly rotting.— Jasmine
- I used to think the Beatles were gay because they all lived together in a yellow submarine.— Amanda
- I used to think that the Beatles broke up when John Lennon died.— Shirley B.