"Nothing."

WaPost:

At a private White House meeting in November 2004, President Bush thanked his Press Secretary Scott McClellan for his help in Bush's re-election:

"Is Scotty here? Where's Scotty?" Bush asked, half-grinning, according to two people who were in the meeting but asked not to be quoted by name because they were discussing a private event. Bush scanned the room for Scott McClellan, the White House press secretary.

"I want to especially thank Scotty," the president said, looking at his aide. "I want to thank Scotty for saying" -- and he paused for effect. . . .

" Nothing ."

At which point everyone laughed and the president left the room.