Rudy Giuliani is in London, and it's not clear whether there's a plane large enough to accommodate his head on the flight home.

I'm probably one of the four or five best known Americans in the world," Giuliani told a small group of reporters at a posh London hotel...

But who are the four other best-known Americans?

"Bill Clinton ... Hilary [sic]," he said, but he was whisked away for another engagement before he could throw out any other names.