For a long time I thought the song "I'm Too Sexy" by Right Said Fred was saying "I'm a martyr, you know what I mean", instead of "I'm a model, you know what I mean". I didn't question it for ages, as I just figured some people would find it sexy if someone was willing to suffer for their beliefs.
A childhood belief about misheard lyrics

others believed things like this
- I used to think Right Said Fred sung 'I'm too sexy for my lamb' instead of 'I'm too sexy for Milan'.— Nineties music was great
- I always thought Hot Chocolate were singing 'You Sexy PIG' instead of 'You sexy Thing.— Bilz
- I used to belive that the word sexy (depending on your sex)
ment you were very girly/boyish.— MysticDarkness - My mom told me that if you didn't eat enough carrots, your eyesite would suffer.— Julie Bulie
- We told our little sister that she had a long bushy tail and she fully believed us for ages!!Anon
- Anytime you had a question (any question at all) you just called the president.— Erin