Stephen Budiansky: Journey to the Edge of Reason (Paperback, 2022, W. W. Norton & Company) No rating

Nearly a hundred years after its publication, Kurt Gödel's famous proof that every mathematical system …

He always kept the door of his office at Fine Hall open, and had a running bet with a colleague that if either caught the other working, the guilty party had to pay ten dollars. Von Neumann was never caught.

Journey to the Edge of Reason by  (Page 156)

The word is about Johnny von Neumann at Princeton ;)