A sexual act by nature (fetish) the muddy duck is when one person anally penetrates another person while flapping their arms and quacking like a duck.
Steve had so much fun packing Kathy's fudge, he quacked like a muddy duck.
by Kip Marshall August 16, 2006
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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!"
by Ddddddidddddd August 10, 2019
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This is a shameful act that only happens in desperation when you are home alone and have completely run out of toilet paper. With your pants around your ankles, squat walking, and your hands spreading the butt cheeks so you don't smear shit everywhere, you walk this way to your roommates bathroom to finish the job.
Greg had to do the muddy butt duck walk to my bathroom to get more toilet paper.
by Sir Greggles March 30, 2017
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