The famous pop singer Chloe Sweetsong is signing autographs outside the local concert hall of a small town when a little girl approaches her with an autograph book.
"Miss Sweetsong," the girl says. "May I have your autograph, please?"
Noticing that the girl looks familiar, Chloe says, "But haven't I signed your book before?"
"Yes," the girl replies. "But when I get ten of your autographs, I can get one of Taylor Swift's."