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1.
1.) A shoe with a fish in it, whether it is alive or not does not matter, it is a fishue.

2.) An issue one has with a fish.
(1)
Guy One: "Dude! Check out that fishue!!"
Guy Two: "10 bucks the fish dies on the stairs."

(2)
Guy One: "This fish is pissing me off."
Guy Two: "True that, I hate fishues."
by GarretP June 03, 2010
 
2.
The issues of ones vaginal region smelling of fish
"Janet over there has some serious fishues."
by Jonathan Ebers August 16, 2008