Query: Ronald Reagan had a nickname, what was it?
Context: In the film Knute Rockne, All American, Knute Rockne (played by Pat O'Brien) delivers the famous "Win one for the Gipper" speech, at which point the background music swells with the "Notre Dame Victory March". George Gipp was played by Ronald Reagan, whose nickname "The Gipper" was derived from this role. This scene was parodied in the movie Airplane!