Asked about his technique, Banksy said: “I use whatever it takes. Sometimes that just means drawing a moustache on a girl’s face on some billboard, sometimes that means sweating for days over an intricate drawing. Efficiency is the key.”

Oh, wait! Maybe we should start by explaining who the heck is Banksy first of all?
Who is Banksy?

Banksy is a quasi-anonymous English graffiti artist. According to Tristan Manco, Banksy “was born in 1974 and raised in Bristol, England. The son of a photocopier technician, he trained as a butcher but became involved in graffiti during the great Bristol aerosol boom of the late 1980s.” His artworks are often satirical pieces of art on topics such as politics, culture, and ethics.