Phooey Duck

Phooey saying (in Swedish) "Look what I found in the couch! An empty tube of nitrous oxide!"

Who doesn't remember Donald's nephews: Huey, Dewey, Louie and Phooey? What's that? "Who is Phooey?" Well, that is why I'm doing this post.
Huey, Dewey and Louie, for those who don't know, are Donald Duck's nephews. They enjoy annoying their uncle. They basically all have the same personality. They were popular enough to appear in spin-off media such as cartoons and comics.
The artist(s) of the Donald Duck comic (which featured the tiro) accidentally drew a fourth nephew (despite the fact there are only suppose to be three of them)... several times in fact. Editor Bob Foster jokingly dubbed him "Phooey Duck". One comic claimed Phooey was "a freak incident of nature". So yes, I did a post on a character that technically doesn't exist.
My sources were:

• http://en.wikipedia.org/wiki/Huey,_Dewey,_and_Louie
• http://en.wikipedia.org/wiki/Duck_family_(Disney)#Phooey_Duck