I've posted this story a few times, but it never gets old. The correct answer is Morgan Stanley CEO John Mack.
Upstairs, Mack was on the phone with Mitsubishi’s chief executive, Nobuo Kuroyanagi, and a translator trying to nail down the letter of intent. His assistant interrupted him, whispering, “Tim Geithner is on the phone—he has to talk to you.”
Cupping the receiver, Mack said, “Tell him I can’t speak now. I’ll call him back.”
Five minutes later, Paulson called. “I can’t. I’m on with the Japanese. I’ll call him when I’m off,” he told his assistant.
Two minutes later, Geithner was back on the line. “He says he has to talk to you and it’s important,” Mack’s assistant reported helplessly.
Mack was minutes away from reaching an agreement. He looked at Ji-Yeun Lee, who was standing in his office helping with the deal, and told her, “Cover your ears.”
“Tell him to get fucked,” Mack said of Geithner. “I’m trying to save my firm.”
CNBC Video: John Mack tells the Geithner FU story...
Updated with news of John Mack's retirement from Morgan Stanley.