I want to know the answer to the following question:
What topics of conversation would Ulam and Von Neumann typically share?
All the background I'm provided with is that "A later friend of Ulam's, Gian-Carlo Rota writes: "They would spend hours on end gossiping and giggling, swapping Jewish jokes, and drifting in and out of mathematical talk."". Is that enough to answer the question?
Answer: yes