No one does revenge like J.K. Rowling—and no one knows that better than the man who narrated the Harry Potter audiobooks.

Stephen Fry can probably be forgiven for not realizing that the audiobook he was recording was in the process of becoming a major cultural phenomenon. But when he met Rowling for the first time, all he knew was that she was a children’s author whose first book had sold well enough to merit a sequel.

“Good for you,” Fry condescendingly told Rowling—or so he’s reportedly claimed in his latest live comedy show. But Rowling knew how to hold a grudge—and years later, Fry found out just how hilariously petty the queen of the Wizarding World could be when she wanted to make a point. Allegedly.

In this case, she made her point over, and over, and over again—every time she wrote a new Harry Potter book.