One night last summer, Lady Gaga sat in a tour bus in England, covered in stage blood from her concert that day. She told me that she had cried hysterically before a recent show because she'd had a dream that the devil was trying to take her. She then said, in earnest, that the spirit of her dead aunt was literally inside her body and that she had eaten a bovine heart to face her fear of her father's heart surgery.

If a stranger on a train had said all of this to me, I would...