In 'Mad Max: Fury Road,' the quote 'What a lovely day!' is shouted by Nux, but the most iconic 'instrument' is the flame-throwing guitar played by the Doof Warrior. This was not a CGI trick; the instrument was a 132-pound, fully functional custom-built guitar and bass hybrid. It actually played music through an array of speakers on the truck, and the flame-throwing mechanism was controlled by the whammy bar. The performer, iOTA, was a real musician who played the guitar while being suspended by bungee cords from a speeding truck. This extreme instrument became an instant cinematic legend, symbolizing the 'high-octane' madness of the wasteland. It showed that in a world where quotes are sparse and action is everything, a literal 'war instrument' can become the most memorable character in the film.