"Before he discovered black holes, it was any swirling thing that sucks you in. Even when he was three months old, if he saw a ceiling fan, it was the only time he would be quiet. He was just stare at that ceiling fan. I know a lot of babies do, but he just was obsessed.

"Then when he was three, he had an imaginary friend, but it wasn't a boy, it was a fan. But this one was called Bad Bad Fan. Its blades were teeth, and it had these little tiny eyes and little tiny feet at the bottom, and it would kill people. It would just blow on people, and that would kill them, because its breath was filled with teeth."

-- "Black Hole Son," This American Life.