(Actually everyone else always thinks the lyrics were this, but I knew better)
Jo-Jo was a man who thought he was a woman,
But he knew it wouldn't last.

The story:

My name is JoJo and so everyone over the age of 25 tries to sing this song to me. They always sing it wrong and I am always left trying to convince them of the real lyrics. For the past ten years I have had to carry a copy of the lyrics printed off of the internet in my bag.