2015 Biff: You see this book? This book tells the future. Tells the results of every major sporting event till the end of the century. Football, baseball, horse races, boxing. The information in here is worth millions, and I'm giving it to you.
1955 Biff: Well, that's very nice. Thank you very much. Now, why don't you make like a tree and get out of here?
2015 Biff: (slaps the back of 1955 Biff's head) It's leave, you idiot. Make like a tree and leave. You sound like a damn fool when you say it wrong.