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An exceedingly cute way of saying thanks, as used between lovers or when the speaker wishes to imply an element of childish gratitude
*hands the gf the remote*
he: "here you are my darlink!"
she: "fankoo" *smiles*
*bystander rolls eyes and shakes head, grinning*
fankoo by Sassielassie September 9, 2006
Related Words
Devolution of 'Thank-you'.
Some dude: coos i haves some ends?

Guy: Okay *hands over some money*


some dude: fankoo
fankoo by Gumba Gumba February 25, 2004
you are a fankoon, you sankoon.
fankoon by mux March 1, 2004
A FanYOOse, is when some someone yells “Yoos” into a fan.
Joe just pulled a FanYOOse