Graffiti artist Banksy unmasked ... as a former public schoolboy from middle-class suburbia. He is perhaps the most famous, or infamous, artist alive. To some a genius, to others a vandal. Always controversial, he inspires admiration and provokes outrage in equal measure.
A canard is an aircraft design which places the large main wing behind the smaller horizontal stabilizer. This results in a triangular shape of the aircraft, similar to a duck in flight, which is where the term canard originated (the word canard is french for duck).
At any rate, the expression led to the use of canard, the French word for duck, with the meaning a hoax or a fabrication. English speakers adopted this canard in the mid-1800s. The aeronautical sense of canard, used from the early days of flying, comes from the stubby duck-like appearance of the aircraft.