Mac: [The driver of the car he is in is playing Chicken with Indy] Don't get clever, Boris. You don't know him! You don't know him! You don't know him! You don't know!
Mac : [The driver of the car he is in is playing Chicken with Indy] Don't get clever, Boris. You don't know him! You don't know him! You don't know him! You don't know!
http://www.moviequotedb.com/movies/indiana-jones-and-the-kingdom-of-the-crystal-skull/quote_65329.html