A mafia boss finds out that his accounting clerk bilked him of 10 million dollars. The clerk is deaf, the original idea was that a deaf accounting clerk can't hear anything about mafia business and cannot testify. Because the mafia boss doesn't speak sign language, he brings along his advocate.
The boss asks where his 10 million dollars are. The advocate translates into sign languages and the clerk answers in sign language: "I don't know what you are talking about!"
So the advocate tells the boss that he said "I don't know what you are talking about".
The mafia boss is fed up and draws a 9mm handgun. The advocate signals: "He is going to kill you if you don't tell him."
The clerk signals back: "Ok, ok, the money is a brown suitcase buried in the backyard of my cousin Enzo in Naples!"
The boss asks what he said. The advocate answers: "He said you don't have the courage to shoot!"