Apparently the press repated to Joe Biden a comment that Karl Rove said about him - that he was a "Dufus".
Joe Biden, knowing good and well that there was something serious going on this week in New Orleans, said Rove was a "great American".
You got to hand it to Joe - he knows when to hold them and knows when to fold them.
Biden, Called a ‘Dufus,’ Turns Other Cheek
Corey Dade reports from Wilmington, Del., on the presidential race.Democratic vice presidential nominee Joe Biden proved he can walk away to fight another day.
Talking with reporters aboard his campaign Monday evening, Biden was told that Republican strategist Karl Rove, while at the GOP convention earlier in the day, publicly characterized him as a "big, blowhard dufus..."
More of the story at the above link.