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1.
Quackadoodle is an awesome game like tag, except you say quackadoodle
Quackadoodle
by EdibleCrayon October 29, 2010
 
2.
A person who thinks they know everything, but don't know much because they don't have enough experience. Often talks to themselves and joins conversations they aren't welcome in, even if explicitly told to but out.
Amanda is a real quackadoodle!
by NBS Team July 24, 2009