From the classic 1984 screwball comedy "Top Secret" starring Val Kilmer
...the East German bad guys have arrested protagonist Nick Rivers (played by Kilmer), and have tortured him to obtain secrets....
First Jail Guard: "They're still working on him. He won't break."
Second Jail Guard: "They've tried everything."
First Jail Guard: "Do you want me to bring out the LeRoy Neiman paintings?"
East German Commander:"No. We cannot risk violating the Geneva Convention."
Classic stuff.