What was he thinking?!
"I thought he was kind of a **** yesterday, " Halperin said.
Halperin made the comment on MSNBC's Morning Joe show. It came after host Joe Scarborough asked Halperin for his reaction to the President's Wednesday news conference.
The word, which rhymes with "sick," was broadcast live because the show's new executive producer wasn't familiar with how to use the seven-second delay button.
"It was a comment that shocked Washington. It really shocked everyone," Good Morning America's Robin Roberts said.
Halperin is one of the country's top political analysts and co-author of the best-selling book Game Change about the 2008 presidential campaign. Although he apologized later in the show, MSNBC has suspended him indefinitely.
"I'm sorry, I'm sorry to the viewers. It was the kind of thing that you can't really explain, but I take full responsibility for it. It was a mistake, and as I said, disrespectful, and I shouldn't have said it," Halperin said.
But White House spokesman Jay Carney was still appalled. "It would be inappropriate to say that about any president of either party," said Carney.
Halperin called the network's indefinite suspension a "totally appropriate" action.