19 May 2023 - greatness

A: Is it true that you're so tough, you scrub your back with a wire brush?
B: A wire brush? No, what for? I use a sandblaster.
A: Rumors say that you led a team to prove the Riemann Hypothesis.
B: Much exaggerated, I assure you. I did it myself, it'll be out soon.
A: And your book is the definitive great American novel.
B: Please, so many embarrassing assumptions. The great world novel.