A duck creates an egg so if "Muddy Duck" (the band) releases a single it is thier egg so instead of dropping an album they will be laying a dozen eggs. It is also a term used to describe their fans.
"Did you hear the new Muddy duck eggs"
Or
"Did you hear the new eggs muddy duck laid"
Or
Q ="Are you an egg?"
A = "Yeah I love Muddy Duck!"