This animated/robotic duck dances to the tune "Disco Duck". This is an Adam & Amanda discovery & conservation project.
A disc is round ... the old 45 rpm records were round, donut shaped discs. They looked kind of like a numeral zero. In some kinds of ball games ... cricket, soccer .... getting skunked is called "getting a duck" ..... a score of zero is a duck.
When you ask someone, "Whater' ya up to ole buddy?" and they say, "Nuthin'."
You know by the buzzword "Nuthin'," that they are thinking about ducks.