Conversations at scientific meetings

When, during the coffee break at a scientific meeting, you ask someone a question about his work, and you are very lucky, you might get a direct answer. If not, the following translations may be helpful:

I already thought about that question, but I forget the answer.
Meaning: I am more famous than you.
That's a very interesting question, let me think about it.
Meaning: You are more famous than me.
That's a very interesting question, let's write a joint paper about it.
Meaning: We are equally famous, but I am lazier.

(Adapted from Glossary of common math terms, by Steve Krantz, in the Mathematical Intelligencer 16(1), 1994.)