Travolta's Lawyer Steals Line from Jack Nicholson

John Travolta's lawyer just dropped a huge bombshell in open court -- dude just spit out a movie quote from "A Few Good Men."

It all went down after the people accused of extorting Travolta tried to turn the tables -- claiming Travolta's lawyer was the person who actually hatched the extortion plot.

But Travolta's lawyer, Michael McDermott, was furious -- and fired back, "You can't handle the truth! You can't handle the truth!"

The lawyer for the alleged extortionists replied, "You've watched 'A Few Good Men,' huh?"