When I was a kid I used to believe that the refrain to "Just another Manic Monday" by the Bangles was really "Just another MAN named Monday"
A childhood belief about misheard lyrics

others believed things like this
- I always hear Manic Street Preachers 'You Love Us' as 'You Love Arse'.— Lou
- when i was growing up i had two imaginary friends. One was named Jennifer, the other was named Onion.— Tessica
- I used to believe there was a Russian Leader named Garbage Trough and an Arabian named Are A FatAnon
- The boy in my class named "Sahand" must have a sister named "Safoot".Anon
- My Mom used to believe that there was a woman named Mrs. Sippy.— Linda
- "Dad, how come in every war movie there is always a man named Lieutenant?"— Chrisotpher