Ancelotti is ready to tell his Chelsea superstars to "f*** off" if they do not end a run of four games without a win.
The Italian said: "I speak to them in English. F*** off is an excellent language!
"I've learned the words, the sentences. But I never lose control. To become angry does not mean losing control.
"I was angry last week after our draw with APOEL Nicosia. After the game the players were surprised - I said 'words'.
"Sometimes with the team and players you have to show you are disappointed in them.
"It's not right to be angry with the players every time as, if you are, they won't listen.
"But sometimes it is necessary for a manager to give an electric shock to his players."