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1.
an odd and interesting creature that makes someone enjoy things, a humorous being
"oooh tis a goober fish"
by dubtronics September 10, 2009
 
2.
someone extremely silly
"hey man, you are such a goober fish."
by timothy force June 20, 2005
 
3.
a word someone uses to annoy their little brother.
(he gets right in his face and says)GOOBERFISH FISH FISH!!!!!
by Annoyed little brother January 25, 2008