Someone else has mentioned this simon and garfunkel song, but I misheard the line "come-on from the whores on seventh avenue" as "come home from the war-zone, seventh avenue".
I thought that maybe seventh avenue was some kind of gang-ruled area or at least a big, ruthless financial quarter.
It makes more sense now I know it's about whores but I feel embarrassed for always singing it at the top of my voice!
A childhood belief about misheard lyrics

others believed things like this
- When I was little i believed that Madison Avenue was a person.Anon
- I told someone once that my favorite band was the Funkel brothers- Simon and Garth.
(Simon & Garfunkel)— Josie - I thought a major general is more powerful than just a general (which still kind of makes sense to me)— Demond
- The buckinghams song "kind of a drag", i always thought they were singing, "Canada Dry"— bobbybobby
- I thought that a quarter hour was 25 minutes long, since a quarter was worth $0.25.— Crystal
- I thought the lines in the sky left behind by airplanes were "sky scrapers". Makes sense.Anon