I used to believe that in the chorus of the Michael Jackson song Dangerous, he said, Dangerous! oh, spaghetti-o's dangerous. It really is the girl is so dangerous.
A childhood belief about misheard lyrics

others believed things like this
- I used to think dead people are dangerous. — J.G.
- I couldn't understand why my grandmother wore an ear-grenade (hearing aid). It sounded very dangerous to meAnon
- i used to think that the road sign "dangerous" was actually "dang-er-roos" a kind of bouncy marsupial— owen cash
- I used to believe that mosquito larvae were baby hammerhead sharks. Made the ditch a very dangerous place!— Karen
- i thaught the michael jackson song billy jean song said Janet's not my son Anon
- I really, truly thought that Michael Jackson and Janet Jackson were the same person. Anon