What is Discworld?
It's my favorite fantasy book series!
🦆What Duck?
Discworld is a comic fantasy book series written by the English author Terry Pratchett, set on the Discworld, a
flat
planet balanced on the backs of four elephants which in turn stand on the back of a giant turtle.
📖 Read on Wikipedia
🦆The Duck Man is a beggar in Ankh-Morpork; he seems relatively sane except for the duck on his head that he doesn't seem aware of. People will ask him about the duck, and he says "what duck?" because he either doesn't know it's there or refuses to acknowledge it despite it definitely being there.