A little deflated, I turned away from the conversation feeling much less knowledgeable than both of them.
Until I started reading the new issue of the Economist. Which happened to have: 1) an article on the relevance of London as a financial capital, and 2) an article on difficult languages to learn and pronounce (with the anecdote about the French "oh").
Bwwwaha, I'm on to you now! And I must remember to read the Economist before family dinners.